SPAM user registration

Hello Everyone,

I have issues in terms of SPAM user registration and creating blogs on my community site. I know this has been discussed many times in this forum and i found some solution such as installing reCapache n all.

i did install reCapacha but still the issues is still remain. i guess some proram is creating false account and posting lots of spam blogs. I have only option to delete everyday but i become tired of this.

Is there any ways, where i can get rid of it??? I suppose, elgg should have this functionality by default.