Google Search: rel=”nofollow”: I am surprised at how excited the blogging world is about this development. I might just be missing something but the benefits of this feature just does not outweigh the weaknesses. I would go so far as to say that this is Google’s way of easy categorization of an indexed page as a blog page more than anything else. Conspiracy theory? Maybe.
If that’s their plan it’s not going to work, seeing as one newspaper has already announced support for the new attribute (disclaimer: I used to work there).
I think it’s going to be a long time before this actually reduces any comment spam — after all, there will still be sites out there that don’t use it (the same ones that haven’t had a post in six months); worse, the comment spammers will probably crank up their volume to make up for any loss from it…
I hate this concept.
I will not use it, and I won’t advocate it. A good deal of the reason for leaving comments is connecting with others. You leave a bit of valuable info, you interact, you contribute, and in return you (I) expect a *real* link back that will help me get better search results, better page rank. It’s a very little thing to do.
I like captchas better than this – and I hate those too.
The client/server side MD5’ing is working flawlessly for me now, and the spam filters (Kitten, bless that soul) are getting really hot. Not to mention intergration with SpamAssassain (which is, well, quite versed in dealing with crappy spam content).
Filtering is the way to go – not spiting in your commenters face.
Wikipedia has also adopted the attribute value. Basically all external links are nofollow, as are some internal navigational (i.e. non-content) links.