Justin.tv is a bandwidth problem. This is "easily" solvable using a CDN. Twitter is a database problem. I am not a DBA (but I play one at work!), but I belie

Justin.tv is a bandwidth problem. This is "easily" solvable using a CDN. Twitter is a database problem. I am not a DBA (but I play one at work!), but I believe this is "easily" solvable using sharding. As far as I know, twitter doesn't do this and nobody really knows why.