I just wanted to mention a relatively new local networking group called Smaller Indiana (smallerindiana.com). They also use Ning and are described as:
Smaller Indiana makes creative people and innovative ideas easier to find. This is the place for you to share your ideas and engage with Indiana's most creative and inspired souls...working together to build community,culture and commerce.
If you are interested in making more contacts in the Indy area, this is a great one to join right now. They have sub groups for each local college you can join, too.