PaulHudson - 12:04 pm on May 28, 2010 (gmt 0)
Agree with QualityNonsence,
Ad's generate very little CTR from tech's though, 'everyone else puts up with them?' is the clue there! ;-)
I suppose decent web hosts, conferences, software etc could gain some impressions, brand awareness and kudos from the association but not sure you could model on CPC.
I guess the admins already got that worked out. :-)