Interesting...it would seem that you would need to upload a continuous stream of new videos every few days....I'm seeing the exact same things with my vids....at first i was getting LOTS of traffic and lots of signup to my sites..then after about a week....they all a sudden cease. I think we just figured out the best thing to do .....keep adding fresh videos every few days.....use tubeincreaser on the videos....after about 2 days...rinse and repeat....i'm gonna start doing that right now...and i'll let you know how i fair.