According to Gloucestershire College, in England, Facebook and other social-networking Web sites can do more than provide a platform for vacation photos, favorite quotes, and status updates; they can help reduce dropout rates, the BBC reports.The media-curriculum manager at the college, Perry Perrott, says that with the advent of social media, students have been better at keeping in touch with faculty members, which has lead to a “significant improvement in retention.”After seeing how popular social-networking sites were with students, Mr. Perry says the college decided to embrace the technology as a cost-free way to further engage the campus.