Bing (and Yahoo) Ads - Is this Legit?

Are familiar with Bing and their gambling advertising policies? If so, I would like your input on the following.

If you do a Bing search from a US IP address and type in "online poker USA" you will see up to six paid ads before you get to an organic search result. I am the semi-happy owner of that first organic search result which I fought hard to acquire. Unfortunately for me, about a week after I got the number 1 spot, a lot more of these paid ads showed up. I noticed the same ads in Yahoo Search as well as a couple small off-brand search engines.

If you look at the advertisements you will see some legitimate sites but you will also see sites like these two examples:

• hxxp://www[dot]toppokersitez[dot]com
• hxxp://www[dot]bestpokernow[dot]com

If you click on either of these websites, you will quickly find out that they are not websites at all. They are simply domains that redirect to affiliate links which in turn take you directly to an online poker site. TopPokerSiteztakes you directly to a BetOnline signup page and BestPokerNow takes you directly to an America's Cardroom sign up page.

My questions are:

1) Is this legitimately allowed by Bing (Yahoo, etc)?
2) What do these ads cost and/or how do I find out?
3) Any advice on what I could do to improve my situation?
4) Oh yeah, and why in the hell does Bing and Yahoo report my URL as www.sitename when my canonical URL is http://sitename?