There's a problem on the internet and that problem is the assumption of honesty. Email is geared towards emails being truthful about who they are from, adsense and other advertising networks rely on clicks coming from valid users, google's new NoFollow extension relies on it being used truthfully and not to deny page rank to valid links a webmaster simply doesn't like and meta tags assume that the tags are correct and unbiased. All of these technologies were highjacked by spammers.

Now Technorati is making the same mistake with their new tags.

Allowing web page writers to categorise their own pages and then modifying your service based on those tags is open to abuse. It's not just a matter of spammers dishonesty either, people may be inherently biased when categorising their own content, for example a simple link like will now place this content in the tag category of "Super Dooper Blogger". This is obviously a blatant lie <g>

We had this with meta tags and search engines stopped utilising them; tags are nothing different nothing different.