I always remember reading that having any kind of intense vacuum pressure on the vagina would cause internal bleeding.... how is it that you can get away with this unscathed? Looking at some of the pics, that is some really high pressure!
Also... I noticed that there were a lot of videos posted on here... but got locked up due to bandwidth limits... I'm hoping someone will host the videos on rapidshare as one person has done here:
viewtopic.php?t=1557&
Unfortunately, the videos there are not pumping videos.