You can post profile pictures, but there's already a Twitter for pictures: tumblr.Basically. Except that you can post pictures now, too, apparently. (Which makes me wonder why there's Instagram...?)
Instagram is a tumblr knockoff, just Facebook was a MySpace knockoff.I thought Instagram was for taking pictures on iphones?
Could you explain a bit further than that?It's facebook minus everything except status updates
Tumblr isn't specifically for pictures. You can post anything on there.You can post profile pictures, but there's already a Twitter for pictures: tumblr.
Instagram is a tumblr knockoff, just Facebook was a MySpace knockoff.
What's there to explain? All you can do on twitter is post status messages up to 160 characters in length. That's it.Could you explain a bit further than that?