The service allows you to pick your platform and installed browsers and then do whatever you wish on a virtualized instance. You can get 5 minutes free, otherwise there are paid options.
Does anyone have experience with getting mechanical turk workers to test some specific OS+browser combination for you? Be it a screenshot delivery of a specific page, test a javascript widget and report, etc.? Seems like it would be a good use of .05 cents or what not to get some data on oddball platforms.
I have seen this one before, and if you want a bunch of screen shots, especially from some of the lesser used OS/browser combos, your going to have to sit there and hit "extend" on your 30 minute lease time of their services at least four or five times. Their ETA is generally way off.
That said, its nice when you don't have the option to access your page through some different OS and browser combos, plus they will let you download all the screenshots in an archive.
This is a really really good site. For many reasons, first, it's works very well for FREE. I use it all the time.
The way it work is, you post your link and then remote browsers get the url and shortly thereafter, they take a full length screen shot of your web page.
Paying gets priority placement, but even with sites that require javascript, if the page has JS in the onload, then that will run before the screen grab if there's enough time.
If you're looking for OSX browser testing, you should check out www.browsrcamp.com . It supports almost all OSX browsers (although only safari is free), and there isn't a 2+ hour wait.