No, no, no and NO. I could not believe I read this: "One simple way to identify with Gen Y students is to make your number available to them for contacting you."
This is the absolute LAST, and I mean LAST thing any educator should do. If you think I'm being over dramatic, watch this link:
http://www.myfoxhouston.com/story/25034390/2014/03/20/students-teach-students-how-to-get-teachers-fired-tutorial
I find it laughable to think that anyone would be a proponent of a student having a teacher's phone number, and it won't cause issues. Come on now!
Any educator should know that there is a line between student and educator, and to say that line should be crossed is ridiculous. We aren't friends with students, it's that simple. I don't care what generation a student is from, there is no need to give out personal information to any of my students, and I don't care to ever do so.
Even if this was only a "suggestion" about giving out cell numbers, it is bad practice, misleading and downright detrimental to an educator's career.