I recently played an interesting pawn sacrifice arising in a position after 1. c4 e6

Take a look at my blog article and let me know what you all think:

http://kubiyakontheroad.blogspot.com/2011/12/interesting-chess-idea.html

Perfect.

in most cases this will simply transpose into a nimzo, so it's certainly not dumb...

Perfectly sound.

At Agincourt, the French were slaughtered by the English. Seeing how c4 is an "English move" and e6 is a "French move", the name of this opening would imply Black's move was a bad idea...

Might be an option in the future for me, but at the moment I prefer 1...f5.

H777 clearly its not a move that is played often.

D4 is certainly workable though, although I much prefer the lines that come from 2.g3

d4 looks like the best next move for white!

Why Qa4 for white?

in most cases this will simply transpose into a nimzo, so it's certainly not dumb...

i agree with fugue you it is flexible, although not my style

not dumb, flexible. It can easily transpose with Nf6 or d5.

e5 instead

dumb