If Google is trying to rank your site by subject relevance and all your comment links point to online gambling and flea brained get rich quick sites then you could do your content harm, and devalue it by allowing these aforementioned “We love you man + Link To Rubbish” comments.

As far as I am aware getting listed in page 1 of the search results comes from good content and industry specific link referrals embedded within the context of meaningful content.

For the last few weeks, I get multiple comments each day on my blog like:
“Thanks a million for this, I am grateful for the info”

After a while, it becomes obvious they are from some form of automated software tool. Geez its annoying. Some go to more effort to disguise it than others, but its still easy to tell.

So in regards to above policy, I mostly agree.

Thanks for the interesting content James.

Yes, you are right, some people post just for the link. Perhaps not as bad are the people who wouldn’t bother to post without a link in return, but whom want to voice an opinion about your piece. Such people, myself sometimes included, have a million things to do and need to justify the time taken to post to your blog. So you might have to be a little lenient on some of us