My 2 cents:
The big Tout services give out winners/losers etc. and refer to lines offered by legal gaming operations. They dont set the lines. The ones that say "go for the over at 17" if you see it a book, are contributing to the gaming transaction if they received funds for the pick. Some have been arrested, but mainly for working for a book on setting lines with tout customers on the side.
The services on the net, most of them are wanna "B" bookies that lose allot of their money gambling. Some of them that take offshore books for advertisers and make money on banner clicks and sing up etc. are operating on thin ice over proceeds of crime.
Canuck