Chip Taylor

The wonders of technology

and decentralized collaboration. Have you heard about alibi networks?

SAN FRANCISCO, June 25 — Cellphones are chock-full of features like built-in cameras, personalized ring tones and text messaging. They also gave a real boost to Kenny Hall's effort to cheat on his girlfriend.

Mr. Hall, a 20-year-old college student in Denver, decided in March to spend a weekend in nearby Boulder with another woman. He turned to his cellphone for help, sending out a text message to hundreds of other cellphone users in an "alibi and excuse club," a network of 3,400 strangers who help each other skip work, get out of dates or give a loved one the slip.

Assistance came instantly. A club member, on receiving Mr. Hall's message, agreed to call the girlfriend. He pretended to be the soccer coach from the University of Colorado at Boulder and said that Mr. Hall was needed in town for a tryout.

"It worked out pretty good," said Mr. Hall, who signed up for the network on www.sms.ac, a Web site that offers access to hundreds of mobile chat rooms.