Some websites offer the opportunity to discuss name-related questions.
Ancestry has forums organized by surname, so we will largely use this probably. You can find the most active board here: http://boards.ancestry.com/surnames.iman/mb.ashx . There is no specific Eyman, Eymann or Eimann board, so we should probably stick with the Iman board to gather all relevant information there.
I had subscribed to feeds at GenForum earlier, so please check for archived information and existing questions and answers at http://genforum.genealogy.com/eyman/ or http://genforum.genealogy.com/iman/. GenForum
discontinues this service by September 30, 2014, but they promise to
let the existing discussions to be available as "read only".