My son's been awfully obsessed with text messaging on his cellphone and I'd like to check and see what's going on. Is he texting one person a lot, or a group of people, and are they in our local area (area code 415) or from out of area, which would suggest something more creepy and alarming? How can I tell? We have AT&T cell phone service...

I want to set up my PayPal account so I can use the new PayPal Here application on my Apple iPhone 4s. Apparently, I need to set it up with my mobile phone number and a secret PIN code to have PayPal Here run. Except I have no idea how to go about establishing a PIN on my PayPal account. Can you help me out?

I was trying to log in to Facebook this morning and noticed that in addition to specifying an email address, you can also specify a cell phone number when you want to log in to Facebook. Cool, seems like a good way to have a second option if I otherwise lose my password and can't get into my email account for some reason. How do i set up a cell phone number on my Facebook account, David?