Now I know you can go through all the advertisers and pick and choose which ads to have on your site - but that's a daunting task.
For those who aren't up to snuff on google adsense - or adbrite (yahoo.com - right?) - they are syndicated ads on sites all over the internet.
I have them on my sites - one of which is www.tommcgiveron.com
But being in the real estate business - you really don't want ads for Prudential on your site, when you're ColdwellBanker. Or if I give the best CMA's in the business - you don't want an ad on their saying how great someone else's cma's are.
Anyhow - thoughts on this topic? Up to know I've really just been avoiding the issue. If people visit my site - they'll see the goods - but then again - if they click on a 40 cent ad - that 40 cents could cost me $4000 in commission on a possible sale... hhhmmm.

You hit the nail on the head Thomas - is the risk of losing any potential deals worth a few bucks from Google? I just clicked on your blog and saw an AdWord for SAP Training in Toronto..? I think it strays from the purpose of your blog. Which BTW has a nice, clean look to it - why send visitors away?
Good topic for discussion!
It is something you must really weigh. I am in dilema now on many of my ads, but you have to do what you have to do to get business.
Here's my approach;
I have multiple websites and place Yahoo Ads (which pay better) on some of them. Here's just one example: I live nowhere near the beach but make money with my Beach Condos website. (I just took the ads down as I'm rebuildig the site, I'm going to emphasize the higher paying keyword phrases)
Since I know about real estate I try to make money in different markets. Last monthly check was 3K.....from markets I don't even live in......
See: Making Money Online