Or will it incur a Google penalty? I would like to join one of those brokers that sell links on your behalf for a cut of the fee.
If the links on your site are 'nofollow' you probably would not be effected at all. But, most link brokerage services require dofollow. So most likely, yes your site will be effected for 'selling PR'. One small ad here or there probably has little to no effect. A lot of ads will probably have large effect. /*tom*/
If you have to ask, don't do it, or you'll definitely get screwed. It is "black hat" to the max and Google is unforgiving about such things. For example, text-link-ads.com are a top-notch link vendor and highly professional and clever, yet they got penalized recently and are nowhere to be found in Google searches. Whatever you do, don't openly advertise selling links on your site, it's a recipe for disaster.
Google don't allow you to sell links on your site unless they are NOFOLLOW. I would not suggest taking part in such transactions!
Most of this is simply untrue. What Google penalizes is selling PR, not ads. If your links or ads use the nofollow attribute, there is no issue whatsoever. /*tom*/
In that case, can anyone recommend any sites that allow people to sell ad space such as banners and not text link ads with DoFollow. I am looking for something like text-link-ads.com but that sell banners.
"Most of this"? Well, I did mean dofollow links, which is what I assumed the OP was asking about ("link brokers" don't trade in nofollow links!). The rest of what I said is 100% accurate.
You can sell ads, Google does it themselves.....why do you get the impression that they care about ads? I think you're confusing ads versus links which are two drastically different things. Google doesn't want you paying bloggers a fee in order to mention your website.
Thanks for the tip Phillip. I think a lot of people could use a few extra dollars from their blogs these days