The number of Greeks registered on Facebook, the social networking site, skyrocketed to 2.8 million in 2010, marking an increase of 426 percent over the past two years, according to a nongovernmental organization based in Thessaloniki. According to the group, called Neoi (meaning Young People), the number of Greeks with a profile page on Facebook rose from 505,000 in 2008 to 1.6 million in 2009 and had exceeded 2.8 million by the end of last year. It is expected that a similar upward trend will be seen this year. But the increase in the number of users of Facebook and similar websites has been accompanied by a spike in the number of complaints about the alleged abuse of these online forums. Out of 218 complaints it reported receiving last year, the Neoi group said that 72 percent related to alleged violations of personal privacy laws and 16 percent to lewd or pornographic messages.