They scream when everyone else on the Net has the same idea and collective desire proves too much for the site's computers and software. The complaining is interesting, given the surprising acceptance by most personal-computer users of unreliable PCs and software. And maybe we're just inured to PC travails. In the end, consumer-oriented Internet commerce companies will do a better job when consumers demand it. But asking for better quality isn't enough.
People have to patronize the companies that provide quality, and have to be willing to pay more.