No, it honestly has a very widespread and global usage. Probably 90% of SF and gaming conventions have a name ending with "Con", or some obvious pun on that. Th

No, it honestly has a very widespread and global usage. Probably 90% of SF and gaming conventions have a name ending with "Con", or some obvious pun on that. The roots go back at least to the 1939 NYCon I (possibly a retroactive name) or the 1940 ChiCon I. See for example http://en.wikipedia.org/wiki/List_of_science_fiction_conventions http://en.wikipedia.org/wiki/List_of_science_fiction_convent....