hotmail/msn giving out your details?

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well recently i have started 2 receive junk mails and calls from ad firms asking for me (im only 16) i dont sign up for anything that gives out my addy, but its starting to come through my old hotmail account, and funny enough that account has my postcode and country listed in the options, ive checked everywhere else that ive signed up 2 and none of them contain any contact information..

so somehow they have gotten my details from that account.. btw 1 of the emails was related 2 to 1 of the calls..


any1 else had this before?