Social media can hurt or help a job candidate:
Almost half of [employers] started Googling right after getting an application. The rest of them waited until the hiring process was further along. Again, 69% of those surveyed say they had at some point rejected a candidate based on what they found there. The most frequent sin committed by the erstwhile job seekers was not drinking (reason for the rejection 9% of the time) or drugs (10%) or having a mutual Facebook friend that the employer thinks is a total skeezeball (0%), but getting caught for lying about their qualifications (13%). Honesty is the best policy, job hunters, especially when there are so many places on the Internet for fact-checking your resumé
The Dish 