Okay so I searched the www for this topic... and found a few sites...
http://wifinetnews.com/archives/2004/05/which_isps_allow_sharing.html
http://wiki.personaltelco.net/index.cgi/IspWirelessPolicies
http://www.eff.org/Infrastructure/Wireless_cellular_radio/wireless_friendly_isp_list.html#list
http://wifinetnews.com/archives/2004/05/which_isps_allow_sharing.html
http://wiki.personaltelco.net/index.cgi/IspWirelessPolicies
http://www.eff.org/Infrastructure/Wireless_cellular_radio/wireless_friendly_isp_list.html#list