There was probably some mention of them in the logs but they never told Archer what their species was called. Information about a subject doesn't matter without the proper name.http://memory-alpha.org/wiki/Ferengi
Scroll down to History
But I suppose the quick and short answer is. Is like our UFO's, we have already made contact. However, it is not information the main public is aware of and therefore treated as if it hasn't happened.
I thought it must have been those actors had pay or play contracts left over from VOY.Bjbeardse 22:45, July 19, 2011 (UTC)