In my quest for world domination, I need to consider that there are:

• My local exchange
• Australian exchanges
• Worldwide exchanges
• People who are interested in alternative currencies
• People whom it has never occurred to think of alternative currencies but who have problems with money
• ..
• other dimensions
• other times
• ..
• platforms that are not FB

With FB the trick seems to be to search the hashtags for example

“alternative currency”

https://www.facebook.com/hashtag/alternativecurrency

Some other groovy tags include

#CommunityInclusiveCurrency . Grassroots Economics., #CommunityAssetVouchers, #TimeBanking, #AlternativeCurrency, #EconomicDemocracy, #barterunit , #alternativecurrency, #communitycurrency

They cut and paste well enough