Yes, indeed, it is true - you can avoid paying fees for calling directory
assistance:
http://www.snopes.com/inboxer/nothing/free411.asp
Cell* phone companies are charging us $1.00 or more for 411/information calls when they don't have to.
When you need to use the 411/information option, simply dial 1-800-FREE-411
or 1 800-373-3411 without incurring a charge at all except for the minutes
required to make the call. Occasionally you'll have to listen to a brief advertisement (selling air time to advertisers is how they keep it free).
Works on home phone also.