Parents are turning to new mobile monitoring software, which allows parents to set Internet controls for almost any portable device. Basic software can be bought from a mobile ap store for just a few dollars, while more advanced protection can be found for under $70:
http://www.todaystmj4.com/features/onyourside/134175673.html
and some thoughts on internet safety
http://www.huffingtonpost.com/george-garrick/internet-safety_b_1250064.html