I used Carlypso to sell my Honda Civic a few months ago. Everyone involved was helpful and professional. I ended up getting a lot more than I would if I traded it in to CarMax, and the steps involved were minimal. I'd definitely recommend them.
I'm at a friend's house who has Comcast and I can't load any pages from pcworld.com, and http://www.isup.me/pcworld.com says it's just me. Hopefully that's just a coincidence...
I'm on FiOS and have also been suffering through terribly slow speeds with YouTube and Twitch.tv. I found that discussion on Reddit about a week ago, and it did temporarily fix my problem. However, after a day or so I noticed my speeds went back down to a crawl.
I also experienced this temporary speed increase (from barely streaming 240p to getting smooth 1080p) if I switched locales (adding "&gl=CA" to the end of the URL) or switched to HTTPS.