I think I'd try it out for myself first. Then, break the news to friends, to see how they take it. Then, if they take it well (without freaking out, and going on a tirade about all the people they would get back, and punish, and whatnot), then bestow them abilities as well.
“…Judge not what a man has done, but judge what he could have done if he was a different bloke altogether. For art thou a leper? And a leper can changeth his spots…” --Rudy Wade, Misfits (Series 4, Episode 8)