Take in to account people that are at work or school and may not have a choice as to what OS they are using. That probably accounts for a big chunk right there.
Seemed promising, but turns out to be irrelevant to me. If I ran Windows I could already run all those browsers. It would be really nice if they released a version that could run on OSX.
It's extremely helpful as a web designer to be able to check compatibility across all browsers without having to install them. Installing IE6/7/8 on the same machine is not recommended.
It might just be me but their processing times seem to have been growing and growing. Also I've been getting frequent erroring machine s(screenshots obscured by dialogs etc.). Might just be my luck though.
Running IE6 under Vista is still valuable, but this tool still fails where IETester fails-- the fonts are not rendered at the same size as they would be in IE6 on XP. Useless for developers/designers if you can't trust their renderings.
http://browsershots.org/ lets you get screenshots of your website from many more browsers. (but its screenshots, so you cant interact with the website.)
This is potentially useful, mainly for running different variations of IE. However ...
a) "from the web" is misleading. It is a native windows exe. It is in no sense running "from the web".
b) nor does it really run in a real virtualized sandbox - try downloading something or saving something from within a page. you'll get a file browser to save onto your own real file system.
