Looking for the silver lining

We’re finally at the point where we’re gathering the requirements and wishes for our tagging system for CDN. So, I’m looking at the current tagging system and tag clouds out there to see what I like and don’t like, which things are essential, which things are optional, and which we shouldn’t do.

What tagging system(s) do you like? What tag cloud(s) do you like? We’ll start working on tagging support soon, so if you use the Developer Network, Support site, CodeCentral or QualityCentral at all, I’d love to hear from you about what you like and don’t like with the tagging systems you might be using on other web sites.

Thanks very much for your opinions and suggestions!