Be sure to renew before June 2008

Renew what? Your entry in the Federal Trade Commission Do Not Call list. From ABC News:

Do Not Call Listings Aren't Forever
Ring, Ring: Telemarketers Could Start Calling When Numbers on Do Not Call List Expire

The cherished dinner hour void of telemarketers could vanish next year for millions of people when phone numbers begin dropping off the national Do Not Call list.

The Federal Trade Commission, which oversees the list, says there is a simple fix. But some lawmakers think it is a hassle to expect people to re-register their phone numbers every five years.

Numbers placed on the registry, begun in June 2003, are valid for five years. For the millions of people who signed onto the list in its early days, their numbers will automatically drop off beginning next June if they do not enroll again.

"It is incredibly quick and easy to do," Lydia Parnes, director of the FTC's bureau of consumer protection, said in an interview with The Associated Press this week. "It was so easy for people to sign up in the first instance. It will be just as easy for them to re-up."

Here is the link to use: http://www.donotcall.gov