CREATE YOUR GEEKINESS
In order for your network to know more about your geeky side, you can add several tag that tell what are you geekiness in the various category.
CONNECT WITH TRUSTED GEEK
Invite people that you trust because they know what they know, these people would be the one you would recommend to your friend if they need an advice
GET ADVICE AND REFERENCE
Once you all set, you can browse your trusted network and ask to get refered to people who knows better than you.