For several years Margaret Downey has been suggesting an Atheist Unity Convention in which many atheist groups unite to form a single convention in that year. Groups such as CFI, American Atheists, FFRF, AHA, AAI and others would get together for one big convention.

This weekend Margaret will try to get enough support from the host organizations to go ahead with this goal. If you would like to see such an event, you should contact the President of the organization you belong to and express interest.

Here are two articles about The Unity Convention:
Friendly Atheist on Unity Convention.
PZ Myers on Unity Convention
Staks on Unity Convention

Hemant on Unity Convention from 2008