The concept behind FFFFl*ckr is not too dissimilar to that of FFFFound - if you like image A, you should like images X,Y and Z. However, instead of basing these selections on crowdsourced likes and comparisons it is setup to draw straight from your Flickr account. Here's the breakdown:

Use it to find the photography you like using the simple idea that people whose work you like, probably like stuff you'll like. You start with a set of pictures - if you authenticate, it'll use 20 of your last 100 favorites - otherwise it'll start with somebody's favorites. Click any picture to load more. Don't like what that person likes? Scroll back and click a different picture you like. It's that simple.

So, based on what you Favorite on Flickr, it pulls in visual treats for you. I actually found that I saw more compelling images on the site if I didn't login and let it compare to my Favorites than if I did but, regardless, it's a good idea and there is a ton to discover there.

Via Courtney.