Every now and then a dummy account is created that starts throwing advertisements on the site. I've banned the accounts I've found, but they really are like cockroaches. Other Ning networks have the same issues.
Should you find a new dummy account posting things that don't look like they would belong on Teachers 2.0, send me an email through Ning or to theartguy [at] gmail.com.
Just went on a 2nd banning spree, thanks in part to your cooperation. It seems some of them have become smart enough to not send spam messages directly to the Ning Admin, so if they don't post to their blogs or the forums I can't see it.
If I've banned you and you feel this was done in error, please email me at theartguy [at] gmail.com.
If you see a post or get a comment that you think may have been sent through a spam account, send me an email through Ning or to the aforementioned address.
And last but not least: If you're interested in being deputized to help keep this site education-centric, let me know.