Any you see are ones which have slipped past me. We have a system in place where the only spammers we do get are human, so no bots etc. Which sometimes makes it hard to find them if it's actually a person trying to look legit, but then spams a load of dick enlargement blogs when you're not looking.
If you see any that I miss just send me a mail with the link and I'll deal with them
It's a constant threat. Ning does a pretty good job of giving us tools to prevent spammers, but unfortunately it's problem that will likely always exist.
Think of them as zombies ;)
The best thing to do is to report them. We take care of pretty fast and when we remove them all of their submissions go away.
What spam are you talking about?