Mobile Broadband sateside
brk: You'll find sporadic spots of unsecured wifi.  There are many restaurants and coffee shops that also have free wifi.If you can handle being online at unpredictable times, it won't be much of an issue.If you want to be able to go online at a moments notice, that will be a little tougher.  You can get pay as you go cell phones, but I'm not sure about the data plans.  Some car rental places will rent you a mobile broadband hotspot, but I seem to recall that when I've seen the pricing it was fairly outrageous.