It's important to be social (people want to work with social and nice* people) but it's probably not important to be a socialite--you know what I mean. Just remember that life is a social event; you're going to meet people all the time. And like with anything in life, you get out, what you put in. So don't be afraid to put in a little work in all avenues of your upcoming venture.

Be nice to everyone you meet; niceness should not be underestimated. Even if it's not important to your company, it's important to you.

I remember stepping outside of a tech 'mixer' packed head to toe with millionaires, and seeing a bottle picker, he asked me what was going on and I told him, and we chatted about our 'entrepreneurial spirit' and he gave me some wisdom on the art of hustle--he was by far the most influential person I'd meet that night. You never know, who'll help you on your way, or who you can help--so always be social, and always be nice.