This thread is for SPCNET to read .
Recently, lots of spammers who registered just to leave their account and never return. The main purpose is to improve their google ranking by leaving their website URL in their signature.
Whenever goggle bot doing its daily job of indexing pages, it will usually calculating the PageRank link popularity scores for the whatever link that it found on various places such forum thread or signature.
Based on this, SPAMMER will use this feature for their *FREE* advertising of their porn website etc and also improve their google ranking. I'm sure you don't want your website to be used just like that by all this Russian spamming bugger. The only way to prevent this is to make sure that all their effort of leaving link in the signature a useless effort.
This can be done by adding the "nofollow" attribute for all links:
The new attribute is called "nofollow" with rel="nofollow" being the format inserted within an anchor tag. When added to any link, it will effectively serve as a flag to tell the search engines that the link has not been explictly approved by the site owner, and therefore "not follow" it, or not use the referring page's (on your site) Page Rank in any way.You can download and install the nofollow mod for free at:If Google sees nofollow as part of a link, it will:
1. NOT follow through to that page.
2. NOT count the link in calculating PageRank link popularity scores.
3. NOT count the anchor text in determining what terms the page being linked to is relevant for.
I see that you use the captcha image to prevent robot registering. However those measures is useless now as an OCR software already added to correctly read the captcha images by SPAMMING software. The only way to prevent those is to install the vbulletin Question and Answer Verification system, also available here:
I'm sure there will be no more effort is needed to catch spammer manually after this . If you want some help, just PM me.