Comment Spam and PageRank Sculpting
Blog comments are a hot topic at the moment and something we're constantly reviewing. Since Matt Cutts, at SMX Advanced, announced the 'nofollow tag' no longer passes pagerank, the blogging and more importantly the SEO community has been discussing the merits of page rank sculpting.
Barry Welford's post, Blog Comments and Google, gives a great run down of the situation and the merits of allowing comments on your blog.
We, at Makak Media, are interested in how a blog aids your SEO efforts and attracts visitors to the site but at the same time we're also mindful that this blog is primarily there for the reader. It's not all about getting visitors and gaining page ranking if your content isn't of quality and your readers can't interact.
Read Only Comments
We have recently adopted a similar strategy to Barry for comments, whereas after a period of time comments are closed on a blog post. This helps avoid those spammy comments that add nothing to the on going conversation and only purpose is to gain a keyword link back to the owners site.
Having had a lot of spam comments lately that have got through Mollom, our anti spam module, we've also had to introduce comment approval on the odd occasion. I think I'll do this on a regular basis to keep a closer eye on the quality of comments.
An additional note for those who do leave comments on this blog, please use your real name, keywords are not allowed and will be edited.
I'd be interested to hear how you handle comments on your blog?