Yahoo
Yahoo and Facebook did not merge. Yahoo is a search engine that competes with google and bing. While Facebook is a social networking site
Twitter is a social networking site that focuses on the "status bar" and not much else. Yahoo is a search engine, email provider, chat engine, etc that also provides social networking however that is not all it does.
Yes! Just check on the social networking site!
Google+ is Google's social networking site.
MySpace is the social networking site that caters for artists and musicians
the first socel networking site was your mom
Facbook is the largest social networking site in the world with millions of user all around the world.
social bussiness
yes
Yes
Yes