Bulk SMS messaging

Looking for a few ideas for pushing out bulk SMS (text messaging)- anyone have any ideas? I know of a couple of services, but I'm looking to compile a few more sources. Thanks!

Bryan M. Berretta
Assistant Director of Technology
Lausanne Collegiate School - Memphis, TN
http://www.lausanneschool.com
Phone: 901.474.1049
SKYPE: bberretta
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Laptop Institute - July 13th-15th, 2008
http://www.laptopinstitute.com
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