Comments on: Preventing Blog Comment Spam http://www.sitepoint.com/blogs/2005/01/19/preventing-blog-comment-spam/ News, opinion, and fresh thinking for web developers and designers. The official podcast of sitepoint.com. Sun, 22 Nov 2009 11:54:05 -0500 http://wordpress.org/?v=2.8.4 hourly 1 By: Diggo http://www.sitepoint.com/blogs/2005/01/19/preventing-blog-comment-spam/comment-page-1/#comment-817926 Diggo Wed, 29 Oct 2008 06:59:31 +0000 1869874674#comment-817926 Thanks a lot, dude :) Thanks a lot, dude :)

]]> By: Ann http://www.sitepoint.com/blogs/2005/01/19/preventing-blog-comment-spam/comment-page-1/#comment-9078 Ann Sun, 02 Oct 2005 07:49:49 +0000 1869874674#comment-9078 I could not imagine how google's algorithm to detect a blog whether containing a spam or containing useful information<a href="http://www.cyber-online-mall.com/" rel="nofollow">.</a> I don't think it could be done perfectly. I could not imagine how google’s algorithm to detect a blog whether containing a spam or containing useful information. I don’t think it could be done perfectly.

]]> By: mmj http://www.sitepoint.com/blogs/2005/01/19/preventing-blog-comment-spam/comment-page-1/#comment-5043 mmj Tue, 30 Nov 1999 00:00:00 +0000 1869874674#comment-5043 <p>This does not penalise the spammer, but it causes the link to be ignored when Google does its pagerank calculation. So, the spammer's site will neither gain nor lose pagerank as a result of the link existing.</p> This does not penalise the spammer, but it causes the link to be ignored when Google does its pagerank calculation. So, the spammer’s site will neither gain nor lose pagerank as a result of the link existing.

]]> By: hotnuts21 http://www.sitepoint.com/blogs/2005/01/19/preventing-blog-comment-spam/comment-page-1/#comment-5044 hotnuts21 Tue, 30 Nov 1999 00:00:00 +0000 1869874674#comment-5044 <p>If its still the case that outgoing links on your page, dilute your linking structure and therefore lower the page rank passed around the site then this could actually be used to prevent this. If you implemented this on a forum, and made it so all outgoing links used this tag, even in signatures etc, then when google comes along, its going to see no outgoing links except your normal site ones.<br /> So this could be used negatively by some webmasters. If you have a site with high PR, and a lot of people who are allowed to post outgoing links, you implement this and voila your own page rank goes up, but your users get nothing passed to them, in terms of PR.<br /> It could be utilized sneakily.</p> If its still the case that outgoing links on your page, dilute your linking structure and therefore lower the page rank passed around the site then this could actually be used to prevent this. If you implemented this on a forum, and made it so all outgoing links used this tag, even in signatures etc, then when google comes along, its going to see no outgoing links except your normal site ones.
So this could be used negatively by some webmasters. If you have a site with high PR, and a lot of people who are allowed to post outgoing links, you implement this and voila your own page rank goes up, but your users get nothing passed to them, in terms of PR.
It could be utilized sneakily.

]]> By: Ren http://www.sitepoint.com/blogs/2005/01/19/preventing-blog-comment-spam/comment-page-1/#comment-5045 Ren Tue, 30 Nov 1999 00:00:00 +0000 1869874674#comment-5045 <p><br /> Whilst the rel="nofollow" isn't going to stop comment spam, it is still a useful.</p> <p>Thou from what Ive read about blog software providers so far, applying the attribute/value to all urls in comments, seems the wrong way togo. Surely blog apps now need whitelists, blacklists, and URL moderation, so the attribute can be applied selectively.</p> Whilst the rel=”nofollow” isn’t going to stop comment spam, it is still a useful.

Thou from what Ive read about blog software providers so far, applying the attribute/value to all urls in comments, seems the wrong way togo. Surely blog apps now need whitelists, blacklists, and URL moderation, so the attribute can be applied selectively.

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