Hi Kathy,
I've been following a thread on this topic in the SBI forums. It sounds like many people are quite happy with the increase in the advertising income, but the ads seem to be terribly unrelated to the topic of the page.
I went to a few sites that have Infolinks in place and wasn't at all impressed with the ads on offer. Do you feel this is going to hurt you at all in the long run?
I decided to wait a bit before considering adding them. They seem a bit 'tacky' to me for some reason.
I am glad to hear that you've had good results with it, though. I'm sure that is quite encouraging.
I'll be interested in hearing how you feel about it in 6 months time. Keep us updated.

Angie