That the email letting me know that [someone on the Popehat blogroll] is following our Twitter account has this as its third sentence:
If you believe [someone on the Popehat blogroll] is engaging in abusive behavior on Twitter, you may report [someone on the Popehat blogroll] for spam.
I enjoy using Twitter, and someday, perhaps as a Friday timewaster, I'll post a big list of links to everyone we follow on the service. They'll give readers an instant reading list of interesting things to read, in 140 characters or less.
But I'd guess that over 90% of the accounts that have followed our own were spammers. In other words, it's about as useful as Usenet. Twitter would be well served by some stringent bot protection, but that would run counter to its "Billions and billions served" claims.
At least with McDonalds. shareholders can determine exactly how many hamburgers are served, and can be assured that real humans are paying for them*, if not eating them.
*My dogs get Chicken McNuggets on the drive home from visits to the veterinarian.