Ah I see - so you think the weak link in the chain is not my ability to upstream over regular ADSL, but trying to get that across the interwebs?
Yep. with alot of the multi-core CPUs and livestreaming capable codecs out there (h264 + aac), streaming has become very capable for the everyman. If you're fine with presenting your screen in 360p (i think twtich/justin downconverts non-sponsored broadcasters to 360p), then this should be something to look into. Best of all, it costs you nothing and its very simple to set-up.