E-mail to Cell Phone

Here's a reference of how to e-mail someone's cell phone if you know who their cell provider is:

Verizon ........ 10digitphonenumber@vtext.com
     AT&T ........... 10digitphonenumber@txt.att.net
     Sprint ......... 10digitphonenumber@messaging.sprintpcs.com
     T-Mobile ....... 10digitphonenumber@tmomail.net
     Nextel ......... 10digitphonenumber@messaging.nextel.com
     Cingular ....... 10digitphonenumber@cingularme.com
     Virgin Mobile .. 10digitphonenumber@vmobl.com
     Alltel ......... 10digitphonenumber@message.alltel.com
     CellularOne .... 10digitphonenumber@mobile.celloneusa.com
     Omnipoint ...... 10digitphonenumber@omnipointpcs.com
     Qwest .......... 10digitphonenumber@qwestmp.com
     Metro PCS ...... 10digitphonenumber@mymetropcs.com