I too have been receiving lots of spam lately, from all of my accounts. Hotmail's filters seem to be useless, they just plain don't work.
The surprising one is Earthlink...I never got spam from (5 years) them until lately. I have probably forwarded 100 spams to them in the last 2 months. I have gotten replies on lots of them (not auto-response) saying they have taken steps to block that source from their system. But as someone said, the spammers just create a new address until they get caught again.
One of the Earthlink spams was an offer to purchase over 10,000,000 e-mail addresses.