Hello guys, I have purchased backlink service on the Blackhatworld, warriors forum, fiverr . . . etc My question is, is there a magic number or number range where they are most effective? Example: 5 backlinks wont do much for SEO, 1500-2000 are decent. 10,000 would make google suspicious? Another factor is the time to add the backlinks, 500 per two weeks for a year or 6000 per 1/2 year. I also know that the PR matter, most of backlinks I purchase are of PR 3-7. Anyone know the right mixture to pacify the Google?