We have seen numerous waves of spam on this site. At first we setup mollom, in 2011 but sometimes it is not enough.

Current practices

Views Bulk Operations views used for despamming:

• comments
• nodes

You can also use the regular comment view to delete content and report it to mollom if you are patient enough.

Other ideas

• http:BL - used on Drupal.org
• blogspam - used on debian-administration.org, but not ported to new API
• spambot - similar
• rate - may be used to process small amounts of spam by the community