The major problem with the current Do Not Call regulations are the number of exemptions: As +ThinkGeek
says, charities and political organizations are exempt. Any business you've made a purchased from in the last 90 days is also exempt, and I think there's also some exemption for local small businesses. It's not perfect, but it HAS reduced the number of calls.
As +Chris Roeszler
mentions, we get collection calls occasionally for a couple of previous owners of our number (even though we've had this number for close to 6 years). Apparently some company was using my Google Voice number as the outgoing number on their calls, because people used to call and leave me messages like "Stop **
calling me and hanging up! I'm going to sue your ***". I almost NEVER use my Google Voice number for outgoing calls. :p Whoever it was must have stopped because I haven't gotten these types of calls in a couple of years.
Our calls have
gone up recently thanks to the upcoming election... Newt Gingrinch keeps trying to call me... :p I'm also getting political survey calls.
Any tweaking to these rules that reduce the number of unwanted calls is welcome. :)