Should I add my biological half sisters on facebook?

[Everyday Cynic]

I've never known them,my aunt gave them my facebook and now they've both sent me friends requests,I don't know what to do. There's a third sister but she hates my dad and our family because my dad left their mom and didn't talk to them since they've been young. My mom doesn't want me contacting them,she says they're going to hate me,but it's also because my mom hates their mother...I'm so confused,help?
I'm 17 and they're all 18-21.

[Jorma Saxbomb]

They should be mature enough to have their own opinions about you, not their parents.
If you'd like to get to know them, then you should add them. Maybe you will have nice discussions and become friends, and if it doesn't work out, it is easy to delete them from your friends in fb.

[lexx]

Yeah