This is terrible anti-social advice. Getting projects to work is about organizing people to work together. Unless your DJB, software is a team sport. If it is a one person project it will fail.

Now when somebody offers to help, be welcoming because it's amazing. But also remember that most of the time their desire to help won't translate in to something useful. That's ok, eventually people will show up who are helpful. Keep being open.

Also, what the hell is somebody doing making a social network if they don't like people.... WTF!?