SCORE: 5 / 5
NOTE: THIS APP IS ONLINE ONLY!
Okay, okay. Instagram may be a free app, but I suppose it's less "unknown" then some of the other stuff I've reviewed. However, it's such a fun little treat if you're into sharing any kind of photography at all that I just had to put it up here.
What is Instagram? Essentially a picture sharing feed between members, of which there are many, and ten times as many photographs to peruse. Comment, like, or follow other users as they are free to do the same. Uploading is very simple: You can either take the shot and upload it immediately, or you can choose to grab a photo from your iPod/iPhone albums. Additional filtering give you some really attractive options for your photos as well! When you're done uploading, add tags to your photographs in your comments so that users may search for your photo according to subject matter!
RECOMMENDATION: If you like to share and comment on photography and hope to get some feedback of your own, this is a very hassle free way to do it!