With PicLens installed in Safari or Firefox, mouse over a photo in Flickr, from a Google or Yahoo Images search, in Facebook or a Picasa Web Album. A "play" button will appear on the photo itself. When you hit it, PicLens will send you into full-screen mode, where you can flip through pictures or simply go on auto-play to see all the photos in the stream. It's a nice alternative to manually clicking on each thumbnail and loading it one by one instead. PicLens is a free download for Safari on the Mac AND Windows as well as Firefox on Mac, Windows, and Linux. Thanks, Dave!
PicLens for Safari
PicLens for Firefox
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