Shouldn't some sort of organizational system be in order? If this thread takes off, there could be pages and pages of posts with no discernible pattern.
I suggest, at the minimum, writing out the full name of the city, state and country of any meeting place, so the search function can be used by interested members. A simple, two-letter abbreviation (such as those commonly used for US states) would be difficult to filter using the search function. Multiple-letter abbreviations that are widely used and uncommon in English (such as "USA") might be workable. Another system is to have an administrator periodically rearrange the posts/organization names into an agreed-upon system.