I understand from reading the other questions that you're trying to keep load times down, but I have a question (possibly a feature request for a next version)...
You suggested making multiple feeds on one page in multiple columns for different tags, 4 pictures in each feed. Could we possibly be able to do multiple feeds of the userid in one page? The first 4 photos appear on the first "gallery" the next 4 appear in the next "gallery" and so on and so on for as many as we'd like to attempt loading?
Also on a side note, is it possible to get a feed of just MY instagram photos using a certain hashtag? This way I could narrow down the images it pulls in (if I'm going to be limited to just 10.