Differences between RENREN and Facebook

Hey guys , today we had a speaking class without Peter, it was about Facebook presented by my lovely friend Maite :)

SO we had to do some differences between chinese social network RENREN  and Facebook so here we go , this is all that I found on Internet , apart the biggest difference RENREN is only available in chinese
RENREN:                                                    
1) You can see who has visited your profile
Facebook
1) This application isnt available on Facebook
RENREN:
2) You have to pay if you want different    stuff on your profile , as your name in colours.
Facebook
2)You only pay if u wish to on the Facebook aplications for getting Facebook points
RENREN
3)Mostly used in universities           
Facebook
3)Facebook is Used by almost EVERYONE.