(05-17-2011 07:07 PM)ZiNgA BuRgA Wrote:  

(05-17-2011 05:05 PM)techu Wrote:  I get it now.
But I think now a days most of the forums or blogs uses nofollow in the links, so the link wont matter I guess.

MyBB doesn't have it by default.  phpBB and vBulletin don't seem to either.  I suspect a number of other systems don't add nofollow either.
Considering many stick with defaults, I would imagine many forums (IDK about blogs) would not have nofollow links.
I personally don't like using nofollow that much.  I've thought about just adding nofollow to users with low post counts, but spammers seem to be rather indiscriminatory, so they'll spam you regardless of there being nofollow or not (as shown by my signature hider plugin - I still get heaps of spam registrations where they just add signature links, even though they never get shown).

(05-17-2011 05:05 PM)techu Wrote:  BTW will you release your anti-spam plugin to public?

Maybe, maybe not.
I'll probably release an experimental version but I don't know whether I'll ever finish it (probably not).  Others are free to pick up on my work anyway, as it's all open source licensed.

I know mybb doesn't have it by default but there is a simple plugin for it, it is helpful for search engine ratings and etc.

will be waiting for the plugin.