While I don't look at someone's gamerscore and judge them by how many points they have, I judge them by the achievements they've won. I usually have more respect for people who have 3000 points, and have gotten all platinum medals in PGR3, and/or have completed all levels in Call of Duty 2 in Veteran difficulty, and/or have gotten all 1000 points in Ridge Racer 6, etc, than people who have 9000 points and have only really played sports games (where they practically give away points).
IMHO, the Linux on PS3 will be freaking cool to play around with, but when I eventually get to use it, I'll probably just play around with it for fun, unless Sony/Yellow Dog provides some good firewall/antivirus software.
Oh, and why should we trust you? Have you actually played the system? All the thousands and thousands at E3 would like to disagree with you.