In the last few weeks, spam activities were getting high again and most sites and email account will get a lot of spams message. Remember the Spammed Indonesian Linux Forum? It's one of the case but you will get more than that if you searched over the Internet.
For email account, most likely the spammers are using images rather than plain text, so most spam blocker will bypass the attachments. Some of the spam message also came in forms of plain text and it will be bypassed by the spamassasin for example.
Blog site which uses WP also suffer from this problem. Even though many of the author has gave a lot of preventive actions such as installing Spam Karma or using some kind of filter to reduce the spams, the spammer is evolving all the time and it's just a matter of time before they can bypass the filter.
DetikInet has also wrote an article about the abnormal behaviour about Spam in the last two months.