Itzle is a new tool that lets you chat about a webpage in real time, complete with your own customizable avatar. You access it by hitting a browser bookmarklet, which redirects you to the site's URL on Itzle (if you've seen Gabbly, you'll know what I mean). From the site:
itzle is a not a website. it’s a remarkable gadget that lets you turn other websites into something they were never meant to be: locations. itzle is a bookmarklet that you add to your bookmarks toolbar, and then click - at any time - to magically enter the website you’re currently browsing and walk around it as if it were an actual, physical place.
It sure is sweet, but I feel the same way about Itzle as I do about Hive7, Gabbly and Chatsum - all cute ideas, but doesn't the novelty wear off after a while? And if the major marketing channels for social applications are through blog widgets and MySpace pages, then these browser add-ins will have a tough time gaining visibility. These tools only become useful (and profitable) if they can achieve critical mass - I think that's going to be an uphill struggle.