@dood111said Been playing it for a year and have had great luck with it.
Cute idea for blitz games or scoring a point against C and D players. Stronger players however will normally give up the recently won pawn in exchange for a development advantage, which is easy to do, since after ...Qxd5 whites knights can run the black queen around the board, getting off their home squares with initiative.
If your opponent has spent half an hour at some stage learning how to refute it then the Englund is just rubbish for Black. Having said that the last time I saw someone play in an OTB game his opponent (close to 2000 rating) walked straight into the only trap:
1. d4 e5 2. dxe5 Nc6 3. Nf3 Qe7 4. Bf4 Qb4+ 5. Bd2 Qxb2 6. Bc3 Bb4 7. Qd2 Bxc3 8. Qxc3 Qc1#
It was supposed to be a three hour game (in the annual Oxford "Town vs Gown" match) but it was all over in ten minutes flat.
I suggest that you learn the Budapest Gambit instead, preferably the Fajarowicz variation. If Black knows it well then it's a half-decent opening. Then after a few years you might feel brave enough to play the Kings Indian - it can get very tactical and it's more about understanding the ideas then memorising a few cheap tricks. I enjoy my Kings Indian games more than any others, win or lose.
Once I looked at a few games I have had no issues with people playing the Englund against me. The people I played seemed stuck when I did not do something stupid.
If you have a look at this line on the 365 chess opening explorer (I'm not allowed to post links because I've never played a game on this site) you'll see that in their database the position after these moves has occurred 17 times. Of those, White played 7.c3 once and went on to win; 7.Nxf6+ once, and Black eventually won; and a slightly better move the remaining 15 times.
I used to play it and would get quick wins half of the time and then I got over the 1600 level and now it is junk.
It is just something fun to play in blitz games.