Quadrille - 2:03 pm on Aug 23, 2006 (gmt 0)

Certainly a lesson on the need to take moderation seriously.

Always helps to make registartion a little more difficult too.

But It really is dangerous to make assumptions about the causes of the problem.

you say you have 9000 incoming links; that's too many to have happened by chance. If you have (or have had in the past) a link exchange scheme, nows the time to cleanse your site. the recent affair may have been the 'last straw' - but the damage may have been a disaster waiting to happen - and once those filters get triggered, a return to last month may not be enough.

Also check your naviagtion and the duplicates issue as advised above.

DO NOT send a reinclusion request unless you really are very sure the site is squeeky clean; they are resource-heavy, and Google will not think kindly if they get a request too soon.

What about all the other member-installed links? I'd think quite seriously about nofollow.