MSN contact request from strangers

I recently received many strangers' requests to add me on their MSN list. It never happened before, and those strangers have similar names. My feeling told me that it's not normal. Having searched on the web, I found out that it's a common problem to many MSN users in this year. The reason is because some websites use triggers to send out huge amount of requests to MSN users, it can bypass certain protocols. Once you add the person to your MSN contact, it will either send you some advertisement, or send you virus. Somthing seriousely, it may get your private files or passwords. MSN has awared about it and built up a black name list. It's a long long list... Anyway, to be safe, never add strangers to your contact list!