I know this was spoken about and many people wondered how it could be done to share multiple internet connections for schools. I just found this to be interesting reading so here's the link...
 
http://www.newswireless.net/articles/030120-locust.html
 
"The impressive part is the ability to combine several broadband feeds. This is an option (it doesn't happen out of the box, but it's built in) - if there are 20 houses in the Mesh, but only four of them have broadband, all users can share all of those lines. It does add to network traffic; there's an estimated 10% increase in wireless load, says Lander. "
 
 
Barry