What does it mean if someone wants to connect to you on Yahoo7?

I've received an e-mail with someone wanting me to connect. What happens if I press 'accept invitation'?What does it mean if someone wants to connect to you on Yahoo7?
I've wondered that, too. If you don't know who it is, don't accept it, as it could be spam, viruses could occur. Maybe you met this person through the Internet and you forgot?What does it mean if someone wants to connect to you on Yahoo7?
its like wanting to be friends.