Spam and Elgg | Ways to fight it.

Hello all!

Recently I've been involved with a high profile and very important project based on elgg. It is being protected by the known tools against spammers:

-Spam Login Filter (Fasim and stopspam key enabled)

-Spam Throttle

-Akismet Anti Spammer


-Country based block

However, still bot spammers are getting through after day two of being online.

How can I prevent such thing?

How can we do to protect elgg against any known and future spammers?

How are other elgg projects handling spammers? How is the elgg community handling spammers?

I would like to hear some insight from all of you, involved with elgg projects.