The For Sale and Wanted post rules have been changed. There is not much of a change. It is more to keep the trading section tidier and easier to find things.
For Sale Rules:
http://www.sigma-galant.com/viewtopic.php?f=36&t=12199
Wanted Rules:
http://www.sigma-galant.com/viewtopic.php?f=59&t=12200
There is a mention of the Trade Bin. This is where all the old ads will go once finished so you can go back and see things that have been for sale, etc. That is coming soon.