"Google Beat will give you a snapshot of some of the topics that prompted people to turn to the web over the past week," the company says on its official blog. "Searches can be unexpected, and sometimes what's popular one week could never have been predicted the week before (think of Falcon Heene, last October's "balloon boy" or Steven Slater). We're looking forward to seeing what our data will reveal."

It's interesting to see Google get into the podcast world. Weekly tech wrap-up shows seem to be all the rage lately, with Leo Laporte's "This Week in Tech" podcast being one of the longest-running. Unfortunately for Google, Leo already has a very popular "This Week in Google" podcast which is hosted by What Would Google Do? author Jeff Jarvis and Lifehacker founder Gina Trapani.

Investor and entrepreneur Jason Calacanis took the "This Week in" brand of podcast to the next level with his podcast network of the same name (which he uses with Leo's permission, of course). Google's new show brings some very high production quality to the genre, and hopefully it's just the first of many more shows to come from Google.

Like Yotify and Alerts.com, Trackle is your personalized web scout. Instead of having to constantly revisit web sites and services for the news you want to follow, you can use Trackle to be updated automatically when there's a change in whatever it is you're following. Want to track prices of a new Canon camera? Want to know when your favorite band has a new album on iTunes? Want to get the latest sports scores? Trackle does all that and then some.

Trackle Has the Most Alerts

What makes Trackle unique, though, is the sheer quantity of alerts they've made available. It's here that Trackle really outshines their competitors. They've also added some alerts that are unique to their service (at least so far), like the ability track crime in your neighborhood - you can even select and de-select checkboxes for the types of crime you want to track when setting up that particular alert.

There are also plans to give third party developers the ability to create their own alerts in the next version of Trackle. And the company promises their service can scale to support however many new ones are created.  

Alerts We Love

For the Facebook obsessed, a Trackle alert can notify you when someone sends you a message, adds you as a friend, posts to your wall, etc. Of course you can see all these things on Facebook, but with Trackle, you can set up an SMS alert for this. That's especially useful for students and employees who have to deal with Facebook being blocked by their I.T. department or for anyone who doesn't spend their entire day in front of a computer.

Bloggers and other information hounds will appreciate Trackle's scouring agents that let you track anything on the web, including blogs, RSS feeds, news, and more. Although other sites allow this too, what's different about the way Trackle works is that you can set up one alert but associate it with different keywords. So, for example, you could fill in "TweetDeck," "Twhirl," and "AlertThingy" as keywords you wanted to track across blogs, but save the whole alert as "Tracking Twitter Applications" instead of having each keyword as its own alert.

Smart and Well-Organized

Trackle is smart, too. Once the system has shown you something once, it's not going to show it to you again and again, even if that particular link rises to the top of Google's search results. Your alerts will always be new information so as not to waste your time.

However, one of the best things about Trackle is the look and feel of the site. The overall design is visually appealing which makes the service easy to use. Left-side navigation leads you to just the type of alert you need and each alert is clearly marked with an "Add," "Info," and "Share" button. ("Share" because Trackle lets you email or Twitter alerts). That same sense of organization is available in your Trackle inbox - the tab where you can catch up on your alerts. When you have new alerts in a particular category, a number appears next to the category name, designating the number of new alerts available. You can click the category to be taken right to it or you can scroll down through your list.

Only One Problem

The only downside to Trackle - and watch out, it's a big one - is that it appears to have been designed mainly for U.S. usage. So for example, when you're tracking crime, home prices, events, etc., you have to pick from a list of U.S. states. That's too bad, because Trackle's service deserves to be used the world over. We hope they'll expand to include other parts of the globe soon.

Halevy, who heads the "Deep Web" search initiative at Google, described the "Shallow Web" as containing about 5 million web pages while the "Deep Web" is estimated to be 500 times the size. This hidden web is currently being indexed in part by Google's automated systems that submit queries to various databases, retrieving the content found for indexing. In addition to that aspect of the Deep Web - dubbed "vertical searching" - Halevy also referenced two other types of Deep Web Search: semantic search and product search.

Google wants to also be able to retrieve the data found in structured tables on the web, said Halevy, citing a table on a page listing the U.S. presidents as an example. There are 14 billion such tables on the web, and, after filtering, about 154 million of them are interesting enough to be worth indexing.

Can Google Dig into the Deep Web?

The question that remains is whether or not Google's current search engine technology is going to be adept at doing all the different types of Deep Web indexing or if they will need to come up with something new. As of now, Google uses the Big Table database and MapReduce framework for everything search related, notes Alex Esterkin, Chief Architect at Infobright, Inc., a company delivering open source data warehousing solutions. During the talk, Halevy listed a number of analytical database application challenges that Google is currently dealing with: schema auto-complete, synonym discovery, creating entity lists, association between instances and aspects, and data level synonyms discovery. These challenges are addressed by Infobright's technology, said Esterkin, but "Google will have to solve these problems the hard way."

Also mentioned during the speech was how Google plans to organize "aspects" of search queries. The company wants to be able to separate exploratory queries (e.g., "Vietnam travel") from ones where a user is in search of a particular fact ("Vietnam population"). The former query should deliver information about visa requirements, weather and tour packages, etc. In a way, this is like what the search service offered by Kosmix is doing. But Google wants to go further, said Halevy. "Kosmix will give you an 'aspect,' but it's attached to an information source. In our case, all the aspects might be just Web search results, but we'd organize them differently."

Yahoo Working on Similar Structured Data Retrieval

The challenges facing Google today are also being addressed by their nearest competitor in search, Yahoo. In December, Yahoo announced that they were taking their SearchMonkey technology in-house to automate the extraction of structured information from large classes of web sites. The results of that in-house extraction technique will allow Yahoo to augment their Yahoo Search results with key information returned alongside the URLs.

In this aspect of web search, it's clear that no single company has yet to dominate. However, even if a non-Google company surges ahead, it may not be enough to get people to switch engines. Today, "Google" has become synonymous with web search, just like "Kleenex" is a tissue, "Band-Aid" is an adhesive bandage, and "Xerox" is a way to make photocopies. Once that psychological mark has been made into our collective psyches and the habit formed, people tend to stick with what they know, regardless of who does it better. That's something that's a bit troublesome - if better search technology for indexing the Deep Web comes into existence outside of Google, the world may not end up using it until such point Google either duplicates or acquires the invention.

Still, it's far too soon to write Google off yet. They clearly have a lead when it comes to search and that came from hard work, incredibly smart people, and innovative technical achievements. No doubt they can figure out this Deep Web thing, too. (We hope).