Two appearances does not a regular guest make.
Believe it or not, I used to listen to Alex Jones before 9/11. If I remember correctly, Paul used to be a guest on his show at that time as well, but I can't verify that. I guess you could say I'm an anti-truther, because I stopped listening to that Alex Jones crap after 9/11.
This thread is also a real eye-opener:
http://www.ronpaulforums.com/showthread.php?t=7094
Where some Paul supporters want to distance him from the truther movement, there are also a large contingent who see him as a champion of the movement. A few also insightfully state that the truther movement is one of his largest blocs of support.
Why are you guys trying to spin the fact that Ron Paul has chosen to align himself with the truther movement (whether he "officially" supports the conspiracy theories or not)? If he really though the 9/11 conspiracy movement was so disgusting, he would not give his time to known truthers such as Alex Jones and George Noory. These guys have not made their views any secret, so he can't claim ignorance on this one.