No, you don't know what the rules are. You have to go to the NCAA bylaws themselves (the primary source). You can't cite a secondary source like what Ben Dyson thinks the rules state. I have posted this several times on this site. Look it up.
No, you don't know what the rules are.
http://www.ncaa.org/wps/wcm/connect/public/NCAA/Enforcement/Resources/Role of boosters in intercollegiate athletics
"Only institutional staff members are permitted to recruit prospective student-athletes. Generally, NCAA rules prohibit anyone else from contacting (calling, writing or in-person contact) prospects or the prospect’s relatives or guardian for recruiting purposes." When fans are tweeting a player "Please come to my school!" that is contact for recruiting purposes.
Is the NCAA itself a good enough source for you?
Couple of other points for you.
1) You can go to pretty much any major college's website and find more or less the same verbiage about booster contact with recruits. Just a quick search and I found Michigan, Indiana, and Ok St. all had similar compliance verbiage to the NCAA site I linked above. Some say Boosters should not contact recruits directly, others say noone other than athletic staff should contact recruits directly.
2) The grayness with the rule tends to be the use of the term "Booster". I don't think anyone would deny that Boosters include anyone with a financial interest in a school's athletic program, i.e. private party donors, alumni donors, season ticket holders, organizations that hold fundraisers to benefit the athletic department, etc.
I would argue that the fact that this site just held a sitewide fundraiser for the IPF that was organized by the site would make anyone who is a member here a booster by the strict definition of booster. Therefore, none of us who are members here should be contacting recruits, via social media or otherwise, based on that definition.