Pretty good, after i blast a set of 10 videos at all video websites i get as much as 1000 uniques that day. The traffic is decreasing afterwards, after the initial boom, but later on it stabilize to a constant value. I never counted all my watermarked videos that float around on the web, but i am sure that they are in the hundreds range... hm.. more than 100 for sure.
Erm.. i also use some other methods not mentioned in the report to be completely honest.