1) c4 d5?

Looks like something I'd play in bullet chess, ie: a weird reply.

Anglo-Scandinavian refers to the groups of peoples who would eventually migrate to the British Isles. They did not play chess but a sort of game like go. In which case I would suggest placing a queen next to your opponent's king.

Srsly, I think its more or less like a Scandinavian but more tactical. It could be a chance to out-weird you, throw you off your game, same as I play 2. Ke2 in response to the Sicilian (or any other defense for that matter).

Black is in BIG trouble.

1...d5?! is a weak move. It deprives Black of a center pawn and White gains a tempo after 2...Qxd5 3.Nc3. White enjoys a slight advantage, meaning Black has made no attempt in the opening to equalize, which is what Black should be trying to do!

I play the English too, and like you, I have been surprised at how often I get 1. c4 d5 2. cxd5 Qxd5 3. Nc3...

And about half the time, they then play 3. ... Qd8?

I have yet to understand how this plan makes any sense whatsoever for black. I guess people sometimes just don't know how to meet 1. c4?

Excellent point and great comparison to the true Scandinavian.

Thanks all - It's nice to know I'm not crazy in thinking this is a weak move.

i swear by the scandinavian and i use this line only for 3 minute and below games as it catches english users off guard. you can play it like a slightly inferior version of the scandinavian; as stated above the only difference is you don't gain any compensation for the loss of tempo when moving queen. however it isn't terrible, its just inferior to other responses by about .3-.4 a point

Well, the major difference between this and the actual Scandi is that in the Scandinavian you're trading centre pawns - Black's d pawn for white's e pawn. In the 'anglo-scandinavian' you're trading Black's centre pawn for one of white's flank pawns. That is a bit better for white. 

I guess I understand it for blitz, but other than that it really doesn't seem very good. I mean, there are worse responses (1...a6?) but not many : P

To point out, if Black doesn't take the d-pawn right away and plays 2...Nf6, 3.e4 might be a good try. (obviously 3...Nxe4 drops a piece but maybe Black can play in gambit style with 3...c6 or 3...e6)

I think that instead of playing Qxd5 Nf6 is good, planning to recapture with the knight instead of the queen and black will not lose a tempo and get a good postion

I don't think the pure c4 d5 is too threatening, especially not if the queen takes. Something with Nf6 and Nxd5 isn't that odd, it can lead to (some kind of) Grunfeld. 

Of course the lines with c5, Nf6 and d5 or the lines with e5, Nf6 and then d5 are more regular. 

If Black plays 2...Nf6, White can play 3.d4 and after 3...Nxf6 Black has transposed into the Marshall Defense of the Queen's Gambit, generally considered one of the weakest of the playable responses (something like fifth after Slav, Orthodox, Accepted and Albin's).

The tactics are actually for white:

Also, 2. Nf3 transposes to a Réti Opening.

Meh, my three games in this line have all gone 2...Qxd5 but I've actually learned something in the forums.

This day will go down in history.

According to fritz's opening book. D5 is very bad. That said 2. C4 is very popular or NF3. The C4 lines transposing into queens gambit lines accepted ect. The common D4, C4 lines.

Maybe black just wants to play anything but the english.

White can play 3.e4. Black has to sac a pawn to play this way. No after 3.e4 nxe4