If you're not, why? You might think "I don't have any mobile traffic", but how do you really know? One of my blogs which is less than 2 weeks old and gets almost no traffic has mobile traffic. I found that out by using our mobile redirect script and now in the process of having a whitelabel set up just for that.
I can get a whitelabel set up for you for your domain(s) and you can start making money with traffic that you're just ignoring right now. You can join
http://www.topbucksmobile.com/ or if you're already registered with
http://www.topbucks.com you can use your Top Bucks login to get into topbucksmobile.com
Whether you are registered or not feel free to hit me up on ICQ if you're interested in having a whitelabel set up unless you hate having more $. ;)