As a business subscriber, they have provided friendly and capable local support for many years, and the service itself is top-notch at a tenth the price of the same service from a telco. Price isn't everything however - their support is excellent.
They communicate with their customer base regularly on maintenance issues and system status, having no issue with owning the rare, but inevitable screw-up expected with any industry.
At one point they had a few local ISPs reselling their service, mostly as wireless. That infrastructure is still in place but I don't see anyone currently reselling it for some reason, however other wireless providers with their own connectivity are active.
I've been dreading the day that some telco beats them up on legal grounds enough to make them go away, but now it looks like there's some momentum behind this concept making it less likely.