I made some changes to my tag cloud and learned some lessons along the way:

• A few useful tags are more effective than a laundry list.
• If I have to choose between tags too often, consolidate and eliminate.
• If I'm not using my own tags, they aren't working.
• If my tag cloud doesn't visually reflect some hot spots, it's broken.
• Use search for the long tails.  Tag and browse for the big buckets.

I removed the following tags:

• Enterprise 2.0 (consolidated under Social Software)
• General
• Information Management (consolidated under Guidance Engineering)
• Product Design (consolidated under Design)
• Requirements (consolidated under Design)
• User Experience
• Work Tips (consolidated under Effectiveness and Project Management)

I changed the following:

• Project -> My Projects
• Visual Studio Team System -> Team System

I'm not satisfied with my tag set yet, but I did find some  of my old favorite posts.  There's still a few sets of posts that aren't easy enough to get to, but I'll have to think more about how to surface them.