Can't some code screen scrape instagram and then get the picture data that way? I screen scrape using firefox using zc.testbrowser libraries but there's libraries where you don't need a browser. hacking that together in curl or even mechanize would be insane w/ php or python because its so much javascript.

I'm sure instagram wouldn't want you logging in with somebodies account and it would come from your server ip unless you have the scripts use proxies to get the data. If you use fb to login you would run into roadblocking accounts plus asking for a fb pw is stuff that only apps like spotify can get away with.