As a matter of principal, not to mention terms of service, I don't often click on ads that appear on my own blog. But, when I see an ad on my site that interests me, I follow it (I believe Google knows who I am, so I don't get "credit" for that click).
Such was the case the other day when I saw a flashy plasma-lamp-like animated advertisement in my site's sidebar with the words "They're not just new forms of data... It's a new form of energy. SQL Server 2008".
I won't ask you to click on the ad from my site, but give the destination site a whirl to learn about the cool things that SQL Server 2008 can do (including something that I'm very interested in: spatial querying):
http://www.microsoft.com/servers/sql/2008/sqlserverenergy/en/us/default.aspx