Obviously if you are trying to remain anonymous (to YouTube), you don’t want YouTube knowing your cell phone number… and potentially identifying you.

Also… you may not want Google and the cell phone company combining their records about you (for whatever reason they have for doing it).

Also… there’s a risk of getting phone SPAM — getting unsolicited calls.

Hmmm… just had a scary thought… imagine AdWords/AdSense combined with the telephone.. where advertisers would create audio ads, and those audio ads… through the magic of Google… those audio ads would be targeted to you… and you’d get a phone call to your cell phone (on the number you gave them)… and you’d hear that audio ad.

The ultimate annoyance.

– Charles Iliya Krempeaux
http://changelog.ca/