I've played most gambit openings in my time, but one I've not really tried is the Belgrade Gambit (1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 ed 5.Nd5). It popped up on my radar when I saw it played at last weekends Vikings tournament, but even then I had to wrack my brain to remember what it was.
If my memory isn't failing me, I'm pretty certain it was popular in the 1970's and 80's, even at the top level. However I haven't noticed it so much these days, even with the current fad of digging up old and overlooked lines. So I'm wondering whether it has fallen out of favour due to 'engine disapproval' . Has the march of the machines dealt it a death blow, or is there some other reason why I'm not seeing it. But if it has faded away due to computer improvements, are there any other openings that have suffered a similar fate?