LinkedIn is a great platform, but it does have its downside. Scams are becoming a problem. The article below talks about that. Do your due diligence if you are active on the site and communicate with someone. Be sure you are comfortable with the other person. Screen who you are connecting with and don't accept every invitation.
Which is the greatest brand? One
person's opinion is below. Some would say it has been tarnished recently, but
most big brands have had their hands full keeping a good reputation.
Enjoy the month!
My LinkedIn profile