Some kind of notification that I'm on a paid access point rather than a free one would be nice. Too often I'm on one of my mobile devices and I'll connect to a network named after the location I'm in (say, "Moe's Tavern"), and there's no indication that it's a Boingo, Broadstreet or whatever other kind of paid hotspot. If I'm not using my browser first (say a Twitter client instead), I get "connection refused" or something that makes me think fail whale rather than "I need to open up MobileSafari and cough up some coin to go any further". The whole non-browser hotspot experience could use a lot of work.