This is an idea that’s been on our list for a few months and now we’ve finally honed it to the point it’s (partly) usable. In short: you can save your RSS search and post it to WP Robot to autopost the articles from our database.
You can read more how to do this here: How To Use Big Content Search With WP Robot
The Beta limitation now is that you can feed only from the first 99 articles. We’ll be working on this the next few weeks and we’ll keep you posted.
Beta testers and comments welcome.