I get a tremendous amount of value from Searchfunder.com and am curious if there are other similar online communities out there for SMB acquirers and owners. To get the thread rolling, here are a few that I'm aware of:

- Buy Then Build Facebook group (https://www.facebook.com/groups/###-###-#### )
- Alignable.com (haven't gotten much value from it, but may not be using correctly)
- #SMBTwitter
- The M&A Forum LinkedIn Group (https://www.linkedin.com/groups/84596/)

What are other communities that have been valuable to you?