Every social network lets you upload lots of pictures, but because those images get buried in the back pages of your profile, they hardly ever get viewed. My Flickr for Facebook and Happy Flickr for MySpace display several pictures at once, right on your main profile page. You can choose how big you want each photo to be and how you want them arranged. Since the images are hosted on the Flickr website, you'll need to create a free account and upload your photos there first. (We promise it's painless.) Then you can choose which snaps to feature and how often they get refreshed.