Get rid of Marketplace subforum, watch Bitcoin prices drop down to $3.
95% of BTC business goes through the forum, if you just wipe all of that out, Bitcoins are now pretty close to worthless. We spent all of this time trying to get Bitcoins accepted by people, and by erasing the market, well... you erase the market.
The market should not be erased, it should be moved to a more specialised place.
Right now growth of the market is hampered by the way this forum presents information.
It is just not a very good tool to deal with a large amount of people doing business.
People talk about wanting bitcoin to be mainstream.
At the same time the community creates a tight ball of layers of information that are just not encouraging people to participate.
This forum won't be able, on multiple levels, to support an influx of main stream users.