walkman - 1:03 am on Jun 12, 2011 (gmt 0)
wheel, CPC is correlated with potential earnings. If I have l*wyers.com we know that lawyers advertise a lot so the odds of me making money are higher than having, say, birdwatch*rs.com.
Obviously it's not an exact science and the name has to be top of the line too, not just have the keyword. The OP stated that he has example.com and that 'example' is popular with advertisers.