Real-time systems hurting long-term knowledge?

Whew, OK, now that I’m off of FriendFeed and Twitter I can start talking about what I learned while I was addicted to those systems.

One thing is that knowledge is suffering over there. See, here, it is easy to find old blogs. Just go to Google and search. What would you like me to find? Chinese Earthquake? Google has it.

Now, quick, find the first 20 tweets or FriendFeed...