my personal experience with hotmail: many years ago in July, some days before leaving for vacancies, i made my account. I NEVER used. Only looked at. When i came back 1 months after to start using in september i found 32 SPAM mails. if i NEVER used this mail, neither i Gave to someone, who's the ONLY source from spam sender could have bought my email? Hotmail itself.
From this days i use hotmail like Spam-collecting first mail, and only when i'm sure that the people i'm talking to are reliables i send them a mail from my REAL work mail. I use it also for inscrpition in all browser game and websites.
Although msn is a popular site, it has in all of it's programs and products many exploits, Msn messenger is often taken for spam in computer analyzers. (programs that scan your computer and draw up a report of the basic components, explaining which are safe and which aren't) Not only that, msn messenger and aim, are both unsecured, and each version, they only get worse, not only security-wise, but in other ways, such as making it more difficult to find what you need, slower connections, etc. Plus, hotmail isn't encrypted at all, allowing people to easily view your emails..