which is why I started altcoins.cc (URL currently here:
http://benjyz.github.io/AltCoins/, repo here:
https://github.com/benjyz/AltCoins).
a whitelist/blacklist should be managed by consensus, not one guy / exchange ( => corruption). this has a lot to do with exchange listings. if somebody just creates a coin, but can't dump it, there is not much point in the scheme.
another problem is the current forum structure is not well suited as a portal. you need some kind of voting or similar mechanisms. otherwise you end up with threads with 60 pages like this one, which no one has the time to read.
I've already put a fair amount of work into altcoins.cc, so somebody can fork the repo and use that.