I used bit.ly to shorten the affiliate links and I heard it can lead to suspension. I don't know anyone who has that experience.
I blasted a lot of bookmarks and profile links in one day. I used bookmarking service to blast 94000 bookmarks and xrumer. I don't know if youtube actively detect a lot of backlinks which appear all of a sudden.
I used the same computer with the account suspended before.
Have you ever experienced any of those?