I personally don't want to see the crowd from Techcrunch here on the site. Blocking the traffic won't really change things... but damn this might suck.
Worrying like this is a sign of lameness that you should fear. I'm all for community. But the whining I've seen on sites like reddit and digg is a huge turnoff.
no need to take such measures. just disallow folks from submitting articles and voting under a certain karma level. they need to earn the right to participate based on making worthwhile comments.
We can automatically remove any user with a karma level too low (-20?). So new users have a choice: make good comments and participate in the discussion, or start get banned relatively quickly for making digg/reddit level comments.
Wow! Rough attitude there. Less coffee, more Cheerios :) Hopefully new users who find Hacker News from Tech Crunch will be good contributors, but eventually there will (hopefully) be more users, and I'm not sure the source properly indicates the quality of the user referred.