this is exactly what I say every single time someone shows off a project like this. Give me valuable data (and lots of it).
Instead of an algorithm store, have a dataset store. I wanna buy a dataset of 1 million tagged stackoverflow questions. I wanna buy a dataset of 1 million random Amazon reviews. I wanna buy a dataset of 1 million blog comments. i wanna buy a dataset updated monthly of billions of new urls found in the web. data, data, data.
with data I can come up with a crude algorithm that works in a day. with no data, not even the most sophisticated algorithm will work.