I wish Twitter would hurry up and start charging me for 'Pro' accounts.
Eg. I would pay for some analytics, but mainly I would also like to pay for better spam protection to block users who post certain 'keywords' eg. would you like to make $16,000 dollars this week.
Which is funny because i created a commercial application to auto follow users based on keywords (www.MyTwitterbutler.com ) so i'm almost certainly contributing to the problem.
I guess it's the old adage "Guns dont kill people, people kill people".