Affiliate Marketing Secrets

Right now, I have digital cable and Roadrunner high-speed internet access from Time Warner. I don’t have any premium channels like HBO/Showtime/Cinemax, so I won’t miss those. I like all of the ESPN channels, A&E, HGTV, CNBC, MSNBC, FoxNews, CNN, HSN, QVC and others. I keep hearing about “content” that’s available through the set-top boxes like Roku, the Boxee Box, and also on Google TV. Is there a Lifehacker or Consumerist article out there that weighs exactly what I’d lose and gain from ditching my Digital Cable subscription? I like watching my local network affiliates. Would I have access to local newscasts any more with these devices? Would my bandwidth allowance be enough with Roadrunner to handle all of this streaming? I realize that appointment viewing is on the decline, and the idea is to watch what you want when you want. I just don’t know what to expect, when the rubber meets the road.