Endorsements are a great way for you to tell others about great individuals in the industry that you'veworked with and maintain relationships with those individuals you think contribute you our industry. It's also a way for others to say great things about you!
If you're searching out individuals to do some work for you, or are looking to refer a customer to someone in another area, but don't know of any one in particular, reading over people's endorsement page can give you a great idea of how others who have previously worked with those individuals feel about them as professionals.
It's a great way to recognize the capable, committed, and productive professionals in our industry. And generally speaking, what goes around comes around, so endorsing others might find you some positive endorsements in the future as well!