100,000 artists trying to upload one 200 KB image per day. That's 308 KB/sec, including UUencode or MIME overhead, so you'd need one T1 line at $1,000 per month to handle that. But you'd need ~7 TB or server space to store a year's worth of these things, so I wonder how they have avoided the task of sweeping them out every six months or so. That must be one impressive server farm. Or maybe my calculator ain't working right.