Social networks like Facebook and Twitter are become focal points of our digital lives, and just as they did with email and other popular digital technologies, spammers are looking to capitalize. According to Mark Risher, chief executive officer of anti-spam software company Impermium, spammers are responsible for creating as much as 40% of the accounts on popular social media sites like Facebook and Twitter. “Social spam can be a lot more effective than e-mail spam,” Risher told Bloomberg Businessweek in a recent interview. “The bad guys are taking to this with great abandon.” Roughly 8% of messages sent on social networks are spam according to Risher, and that figure has doubled in the past six months, the spam expert estimates. Businessweek notes that companies like Twitter and Facebook are beginning to increase their efforts to quell spam, having recently sued several perpetrators and increased their respective investments in anti-spam personnel and resources.