Theynow are experimenting with Switchboard. This offering setsup high speed servers in various places that have very high bandwidth connections to the Internet. On your computer end, you run the Switchboard app. This aggregates all your internet traffic into indiidual packets which it then sends to / from the server you pick. From then on, all the traffic at the PC end is spread across all the connectivity your system sees from it's end. Unlike dedicated ports which are allocated by application, Switchboard spreads all communications across all paths dynamically. This gives the effect of load balancing all traffic by packet rather than by application so if a particular use is, say, media or Skype, then it spreads all packets across the total available bandwidth. The server on the other end does all the multiplexing and parsing to give you the greatest possible throughput.
It is still kinda rough as they tweak it but now is the time to get into the cheaper pricing for the future... like they did with Connectify and Dispatch.
For the most part, I have successfully worked video hangouts through Switchboard when my Campground feed was less than 100kbps... at best. I used 4 wifi adapters on the PC and Switchboard connected them all to their Switchboard server in Dallas. My effective through put gradually improved to a pretty solid 1.5mbps and the hangouts were quite smooth.
Their Dispatch pro aggregates all of your connectivity into a combined bandwidth, too, but it does it by thread not by packet and though it does try to do load balancing it is not nearly so effective in the typical campground wifi systems we have been working through as we travel.
I am not saying that this is something everyone should have but I have found when I was out of options for connectivity, I was almost always able to work out something that got me what I needed by using a combination of connectify, dispatch and/or Switchboard.
Interesting software tools for connectivty but they are neither intuitive nor completely automatic. The user must have some sense of what is really wanted to apply them successfully and productively.