@adbono - I think you nailed it. Even when my son was being recruited 14 years ago as twitter was becoming mainstream for recruitment it was a bigger mess than it is today, as people didn't fully understand how to best optimize social media and its implications. Lots of guys on my son's travel team were heavy into it (and themselves) and got burned...it got very ugly for some. No question in my mind that there is little it can do to benefit a recruit but it can absolutely sink them if they don't follow your advice above.
I had a long talk with my son about twitter and he was more against it than I was at the time. His reasoning was that he wanted to keep his communications and relationships private between himself and any interested coaches. He believed specific one on one communication (text, email, phone) plus word of mouth was more than adequate with coaches. Looking back, it is really hard to argue with him.
Just my experience....