I think we are arguing semantics here Bees. There's a difference between some graduate assistant using to comb through film of players they do not have film on or know very little about and using the sites to offer every four star recruit because you trust Farrell's evaluations. Your first post could be interpreted that way, and your post responding to mine infers that.
Staffs do in fact use those sites, they would be dumb NOT too. In fact, if you asked that question 5-10 years ago the numbers in the polls would be higher. Youtube and HUDL now offer easier access for player highlights and film, and a site like HUDL also has individual games posted as well, not just highlights.
And again, those sites are also used by schools much like YELP would be used by a restaurant. To make sure recruits enjoy their visits, what they are saying about their facilities, etc.