Messages with numbers? Why?

---------- Forwarded message ----------
From:
Date: 2008/9/12
Subject: RE: Message 9051157
To: xxx


Dear xxx!
Want to be a perfect lover? Want to boost your sexual power twice?
Discount price store:
http://msn.actwhy.com?vpp
We do guarantee high-quality medications, instant worldwide delivery and friendly support
Pfizer is a licensee of the TRUSTe Privacy Program!





---------- Forwarded message ----------
From:
Date: 2008/9/12
Subject: RE: Message 9089513
To: xxx


Dear xxx!
Want to be a perfect lover? Want to boost your sexual power twice?
Discount price store:
http://msn.sidetrue.com?lcd
We do guarantee high-quality medications, instant worldwide delivery and friendly support
Pfizer is a licensee of the TRUSTe Privacy Program!




---------- Forwarded message ----------
From:
Date: 2008/9/13
Subject: RE: Message 6894031
To: xxx


Dear xxx!
Want to be a perfect lover? Want to boost your sexual power twice?
Discount price store:
http://msn.couldboat.com?dpn
We do guarantee high-quality medications, instant worldwide delivery and friendly support
Pfizer is a licensee of the TRUSTe Privacy Program!