Well slow day at work so thought I'd share my experience with Homefusion. I've had the service for slightly over 1 year now. I have a desktop, laptop, 3 tablets, 2 phones, xbox 360 and playstation 3 that routinely connect. Data usage is about 15-18gb per month. My home is not very rural, but just far enough that cable is not an option and the DSL service I can get is about 756k and drops if it rains anywhere in 150 mile radius (I'm not joking, I live in Arkansas and I could always tell when it was raining in Tulsa). Speed is good with +20mbs down and typical latency 75-100ms. I'll touch on it below, but by far the biggest drawbacks are data limits and cost.
Who is it good for? Well if you can't get cable/dsl and want a decent broadband connection with lower latency it works very well. I use it all the time for online gaming. For example Halo 4 on xbox, Borderlands 2 on PS3, SWOR/WOW/Starcraft/Minecraft on PC all work well. My typical experience has been these games use about 30-50mb an hour of play with small amounts of voice chat (can vary quite a bit). Of course updating games can chew up data. We are generally pretty heavy internet users. It works well for most everything I do, but understand that I'd drop it in a second for a decent wired connection to get rid of the data caps and cut my bill in half.
What is it not good for? Video. You can watch youtube videos from time to time, but people really under estimate how much data you can chew up with HD video, even youtube. You are not going to want to use any video services like Netflix or Amazon Prime. Homefusion's connection is fast and these services will ramp up the video quality to take advantage of that and you will blow through data. I have Amazon Prime and I have watched a few TV shows with it and my experience has been about 1-1.5gb per hour. You also have to be careful with computers (or consoles) updating. I do not let anything auto-update and will use my extra data on the last day or two of the month to update. I will sometimes tether my phone to use up its data on updates as well.
Problems? I have had some of the frequent resetting problems that others have had. It was especially bad Nov-Dec of last year with several resets a day. For the past 2-3 months that has really calmed down. I now I notice it about 1-2x per week. It is annoying, but even at its worst it was about the same as my bad DSL.
I find the router's menus to be rather cumbersome and slow, but just about every function you wound expect of a router is buried in there somewhere. I run a second wireless router for the basement without problems.
I have not had any of the phantom data usage that other's report. I cannot say why others have had this issue. I can say that I watch my data very closely. Once or twice I have had big months where I had to bump up my data limit to 30gb, but in generally 20gb has been just right. Those times that I did go over it was not a surprise and I just bumped up my data before hand (generally downloading an entire game or massive updates etc). I do not let anything auto update. Our phones and one of the tablets share 6 gig of data and often I will try to use up that data as well.
Thoughts...it works well for what it is. It is better than my alternatives. It is expensive. Its data limits are too low (they need to go up by a factor of 10). All in all I am pretty happy, I'd love to get a wired connection but this is the best alternative I have found so far.