According to the latest report from Symantec’s MessageLabs, spam level is over 90% again (90.4%, to be precise), which means that one 9 out of 10 e-mails are spam. This is a huge increase compared to February, when the spam level was at 73.3%, and yes, it spells more trouble for social networks, which have recently been dealing with an onslaught of scams.
(brief article with charts of spam, virus, etc.)
http://mashable.com/2009/05/27/spam-social-networking/