When you click 'add', it sends them a request to approve you as a friend. You can also send them a message to let them know who you are in case they don't recognize you.
Some people have it set so that only people in their network can see them. So, if you live in Miami and are in the Miami network, you can see the profiles of people who are also in the Miami network without being their friend.
But this is the reason that I like Facebook- I can prevent just anyone from seeing my profile.
Re: facebook ?
aokiedokie
Mama Jan's Kitchen... a food blog
Some people have it set so that only people in their network can see them. So, if you live in Miami and are in the Miami network, you can see the profiles of people who are also in the Miami network without being their friend.
But this is the reason that I like Facebook- I can prevent just anyone from seeing my profile.