CHAMBER.COM

Here are the links: (I'm not an affiliate and don't make anything with these referrals)
1) ConstantContact.com has a great newsletter too that you might find interesting
2) MeetUp is at http://www.meetup.com/.
3) Toastmasters Int'l: http://www.toastmasters.org/

Also, you might try your local Chamber of Commerce. I'm sure they would charge for their meetings. Another thing I do is network with other consultants and business people from the booths that I do (I'm a consultant with Usborne Books & promote literacy). So if your business is like that it's another thought for networking.

Just a few ideas:

Tina 'the book lady'
http://familyliteracy2.blogspot.com
familyliteracy2(at)gmail.com

Be sure to check meetup.com and constant contact. I just went to a constant contact event on using social media for business. So both of those might be good starts for you. Oh, I think there is a program called Toastmasters (?) that's nationwide.