The 200th forum ad round will be in about a week. Normally I do some something on significant numbers like this. Any suggestions?
Rotate the 200th advertisement into the "News" at the top of the forum.
If you need some suggestions , one week is too long
You can add one rule to the auction ,
like:
If you want to auction, you need to put some money like (0.5btc) in some address firstly.
In case you auction for fun, or not pay after you get the auction
In this way, buy show all the members the address with 0.5 btcs. the auction become more real ,interesting and active.