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Facebook estimated global ad revenues will jump to $3.8 billion, more than double the social networking giant's 2010 total.

Ad revenue for the site, which has over 750 million registered users, will miss the expected $4.05 billion mark, according to analysts, but the slowdown in growth is explained as a diversification into other revenue streams like Facebook Credits.

Ansca Mobile, in partnership with InMobi and PapayaMobile, has today announced LaunchPad, a suite of marketing and analytics services targeted towards mobile application developers using Ansca Mobile's Corona SDK. The services will allow developers to better market their apps, increase distribution, improve monetization and better understand their audience, the companies say.

Mobile application search and discovery service Chomp has released its June 2011 report on app search trends and found that, for the second consecutive month, paid app downloads on Android have increased. The increases are small; paid Android app downloads increased just 2% from April to May and only 1% from May to June.

And in total, only 6% of all Android downloads on Chomp's network were paid.

According to a new report from analytics firm Distimo, the average selling price for iPhone games has declined by 28% over the last year. However, the revenue generated by the most successful freemium games has increased by a factor of 10. The increase is due to the popularity of in-app purchases, which are now used in 35% of the 300 most popular games in the iPhone App Store.

From games-on-demand company Extent, there comes a new distribution platform called GameTanium, the first unlimited subscription gaming offering on Android. With GameTanium, users can play all the games from participating developers for just $4.99 per month. By year-end, Extent says that there will be over 200 games on its network.

In-app purchases for upgrades, virtual goods and more, are an increasingly popular way for developers to monetize mobile applications, as opposed to making the app a paid download. This is especially true for Android, where paid apps don't perform as well.

In addition to the programs provided by platform makers like Apple and Google, there are a number of third parties that offer similar services. In this week's ReadWriteMobile poll, we want to know which programs you've tried, which you use and which you like or dislike.

Mobile ad network Millennial Media is out with its report for June and the numbers look good for Android. 16 of the top 20 devices on the network run Google's mobile OS, keeping Android as the leading OS on the network for the 7th consecutive month. Android also accounts for a 54% impression share, says Millennial.

Other major findings this month include a growth in iOS impressions and connected devices (e.g. iPad, iPod Touch, Samsung Galaxy Tab, etc.).

In April, Apple began banning apps using pay-per-install methods, such as those provided by Tapjoy and others. Now W3i, a mobile application monetization company, has come up with what it says is a workaround for developers whose incentivized app install revenue streams have since been closed.

With W3i's new product called the "Mobile App Ad Platform (MAAP)," developers can offer their iOS apps for free for 24 hours and market them via banner ads that display within other applications.

Mobile analytics firm Flurry is out with a new report that examines the revenue generation capabilities of free-to-play (aka "freemium") games versus paid ones. The conclusion was somewhat surprising: freemium games actually make more money. As of June, freemium games accounted for 65% of the revenue generated while premium games accounted for just 35%.

But this hasn't always been the case.

Fresh on the heels of BOKU's commercial launch of its 1-Tap billing solution for Android, competitor Fortumo is announcing a revamped in-app payments SDK with support for operator billing in 22 languages across 61 countries, specifically in Europe, Asia and the U.S. market.

One unique feature offered by the updated SDK from Fortumo is the addition of a "fallback" method for customers whose mobile operator does not support direct carrier billing. In these cases, Premium SMS will be used instead. And both options can be implemented with one integration.