I'm a big fan of the concept of the browser as a 'lowest common denominator' platform for the Web. And there is a lot of innovation happening in the browser space right now - Flock, Opera, Firefox and even IE7 is doing its bit to keep up (although we're still waiting for some truly original knock-yer-socks-off features from IE7). So I like to think there is plenty more innovation to come in the browser - and imho the WebOS players are one of the more interesting set of startups using the browser as a platform. I also like the technology being delivered by Personalized Start Pages and associated widgets (Pageflakes, Netvibes, et al) and Web Office contenders (Zoho, Zimbra, ThinkFree, et al).

Having said that, I do recognize that the browser has its limitations and that Ajax isn't the be all and end all of interactive technology. My profile of the upcoming NY Times Reader showed some of the possibilities of a web-enabled desktop app (or a webified desktop app, to use Ebrahim's term). Times Reader has rich functionality, courtesy of Microsoft's Windows Presentation Foundation technology - but it also relies on the Web to get the NY Times content and to communicate with other people (email a story, for example).

Other discussion on Ebrahim's post:

• Ryan Stewart: "The best RIAs provide a layer of abstraction over both the web and the desktop. The Webified desktop application, as Ebrahim uses the term, implies installation, which is an old, antiquated model for software delivery."
• Tim Bart: "I personally prefer Desktop application over web-based applications, but I appreciate being able to access to my data from anywhere, and get it synchronised over multiple applications."
• Alex Iskold calls it the "webification" of the desktop and mentions desktop widgets as an example. He notes: "There is no reason why our desktop applications can not be web-aware. An improvement in this area would drive up our productivity, because switching back and forth between the application and the browser is very inefficient."
• BuzzSort is firmly in favor of webified desktop apps and dislikes webtops: "It is a great technological trick taking this platform we have within the web browser, one that is restricted in such a tight way, and make it attempt to mirror your computer desktop. It is however a step backwards to a thin client way of working."
• Emre Sokullu is in favor of browser-based apps, "except web based operating systems". He says something that I always point out too: "Connectivitity should not be seen as a drawback because the world is getting more and more connected everyday."
• Eric also prefers web apps: "Web applications have a number of advantages not easily duplicated by desktop applications; sharing, collaboration, platform agnosticism, stability, low risk of data loss, accessibility."
• John Milan does the numbers on desktop vs browser apps for email.

There are other great comments to Ebrahim's post and I encourage you to leave your comment there too. Perhaps the biggest point to make is that it's not either/or, despite the headline I wrote for the previous post! There is a place for both webified desktop apps and browser-based apps. Indeed the browser is basically just a desktop app at its most generic.

The biggest advantage the browser still has though is its ubiquity on computers - and we'll continue to need common Web platforms, that utilize web standards, for quite some time yet.

UPDATE: We've published a poll, for you to tell us which type of app you prefer - desktop or browser-based.