Do you think Facebook fulfills all your social requirements?

Not at all but it is very useful to find and get in touch with old friends who live in some other states or distance towns.

I wouldn't say every requirement but it does help me in getting info from various sources that I might ordinarily miss.

It does give you that up to a certain point. But there are other sites and other platforms that are FREE and helps your business be seen globally.

Yes it does...and not only social bt also promotional requirements.

Of course not, it is just one tool of the many which when synergized will get you best results.