The only major problem is that there's a lot of "cheap" broadband plans out there which feature paltry monthly fees, equally paltry bandwidth allocations, long contracts and exorbitant usage fees for any use beyond the normal allocation.

Quite a few people fall afoul of these because hardly anybody keeps reading the fine print. Although admittedly quite a few companies use these just as a way to get the customer to start using broadband and then offer the ability to switch to a plan with a higher monthly data allowance.