Interesting idea! It would be neat if one were able to select a filter that's already been used (off an editor's pick or an image in the gallery) and apply that particular filter on their image of choice as well. Crowd-sourced selection of the best filters might produce nifty results.
Agreed, this would make this way cooler. Maybe someone could turn this into a web app where people vote on the best filters, and you can either make a random filter or choose from a selection of highly-voted filters. Could be very interesting.
edit: I see that this is already a webapp, but the additional functionality I described would still be cool.
But :-) while your headline is justifiably front-page HN worthy, these are not "instagram filters to the next level". Take a look at all the instagram clones, and their filters. The filters suck. They are usually not very nice, and make most photos look worse.
Now of course the people who dislike Instagram will disagree with me, but as a photographer myself, I can see that most of Instagram's filters are lovingly made, and they do something that most people can't match - and it's not for lack of trying to copy them!
In other words, you can't take a bunch of random transformations and hope to get anything remotely like the Instagram filters. These things take a great effort to make.
Again, no criticism intended of your work - more of your headline....
Because someone submitted it and people upvoted it? Getting enough upvotes to stick on the front page for a bit is a good yardstick for relevance, I think.