If you want to see how big a semantic mindshare (at least on the web) you have with respect to a particular word, check out Googleshare. I did it with myself (of course), and Vic Ceder. Here’s how we rate:

• Kris Jensen has a 0.39% googleshare of “”square dance””
• Vic Ceder has a 7.06% googleshare of “”square dance””
• Kris Jensen has a 0.72% googleshare of “”square dancing””
• Vic Ceder has a 2.21% googleshare of “”square dancing””

Think about that: Vic’s name appears on over 7% of the pages that also mention square dance. And that’s just his name; I’ll bet it would be higher if we looked at pages that link to his site.

Here’s another way to have fun with Google: Googlefight. Stick in two rival keywords and see which has the most references in Google. Example: “square dance” gets 152,000 results, while “contra dance” gets 17,100 results.