by Virtual-R » June 23rd, 2009, 3:19 pm
This doesn't happen because of your personal contact list, It's due to you being on the other peoples msn list. The other people will allow facebook to access their messenger / hotmail contacts, and when you appear in them, it notifies you that facebook has recognised you through that person and asks if you want to connect to them. It's a fairly simple script that works quite well, but I also find that people you have blocked can sometimes come up in a email / messenger search, facebook doesn't always recognise such a person is blocked and trys to link you to them, which can be quite annoying as you can imagine.