I have an unusual project I am working on whereby I need to setup a vBulletin forum with mirrored categories of Yahoo Answers. Then possibly by cron pull all the latest topics (use RSS for each category to check?) from Yahoo and post them in the relevant categories on the vB forum. This will happen constantly so the two sites are effectively mirrored in content. To get the replys to the new questions another cron will need to check already posted topics to the forum every few hours upto 24 so replys to the Yahoo topics are also replicated on the vB forum after the initial post was made.