I understand the QG is not really a true gambit, as white generally recovers the pawn if taken. Check out these six RHP games below where black makes an effort to keep the QG "gambit" pawn. It seems futile in a certain ways, but I would like to keep the gambit pawn as black.
Game 1. Without white a4. Black keeps the gambit pawn. 0-1
White 1683
Black 2035
Game 7878577
[Event "Challenge"]
[Site "http://www.redhotpawn.com"]
[Date "2010.10.28"]
[EndDate "2010.10.31"]
[Round "?"]
[White "tripleblow"]
[Black "moon1969"]
[WhiteRating "1683"]
[BlackRating "2035"]
[WhiteElo "1683"]
[BlackElo "2035"]
[Result "0-1"]
[GameId "7878577"]
1. d4 d5 2. c4 e6 3. Ng1f3 c6 4. g3 dxc4 5. Bf1g2 b5 6. O-O Bc8b7 7. Nb1c3 Nb8d7 8. Bc1g5 Ng8f6 9. e4 h6 10. Bg5xf6 Nd7xf6 11. e5 Nf6d5 12. Nf3d2 a6 13. Nd2e4 Bf8e7 14. f4 Nd5e3 0-1
Game 2. With white a4. Black keeps the gambit pawn. 0-1.
White --was about 1950
Black --2035
Game 8065216
[Event "January 2011 Longhaul Octet I 1600+"]
[Site "http://www.redhotpawn.com"]
[Date "2011.01.04"]
[EndDate "2011.03.14"]
[Round "1"]
[White "svens"]
[Black "moon1969"]
[WhiteRating "1025"]
[BlackRating "2035"]
[WhiteElo "1025"]
[BlackElo "2035"]
[Result "0-1"]
[GameId "8065216"]
1. d4 d5 2. c4 c6 3. Ng1f3 e6 4. Nb1c3 dxc4 5. a4 Bf8b4 6. e4 b5 7. Bc1g5 f6 8. Bg5f4 Bc8b7 9. Bf1e2 Bb4xc3 10. bxc3 a6 11. O-O Ng8e7 0-1
Game 3. With white a4, and ugly for black. 1-0.
White 2031
Black 2035
Game 8449278
[Event "Clan challenge"]
[Site "http://www.redhotpawn.com"]
[Date "2011.05.27"]
[EndDate "2011.07.29"]
[Round "?"]
[White "LevonB"]
[Black "moon1969"]
[WhiteRating "2031"]
[BlackRating "2035"]
[WhiteElo "2031"]
[BlackElo "2035"]
[Result "1-0"]
[GameId "8449278"]
1. d4 d5 2. c4 c6 3. Ng1f3 e6 4. Nb1c3 dxc4 5. a4 Bf8b4 6. e4 b5 7. Qd1c2 Ng8f6 8. Bc1g5 h6 9. Bg5h4 Nb8d7 10. e5 g5 11. Nf3xg5 hxg5 12. Bh4xg5 Qd8b6 13. exf6 Qb6xd4 14. h4 Nd7xf6 15. Ra1d1 Qd4e5 16. Bf1e2 a6 17. f4 Qe5e3 18. Rd1d8 Ke8xd8 19. Bg5xf6 Kd8e8 20. Bf6xh8 Qe3xf4 21. Be2f3 Bc8d7 22. Qc2d2 Qf4g3 23. Ke1f1 Ra8b8 24. Qd2d4 Qg3d6 1-0
Game 4. With white a4. 1-0.
White 2300
Black 2035
Game 8327950
[Event "March 2011 Mini Banded Threesomes 1950+"]
[Site "http://www.redhotpawn.com"]
[Date "2011.04.06"]
[EndDate "2011.07.02"]
[Round "1"]
[White "gebensieauf"]
[Black "moon1969"]
[WhiteRating "2300"]
[BlackRating "2035"]
[WhiteElo "2300"]
[BlackElo "2035"]
[Result "1-0"]
[GameId "8327950"]
1. d4 d5 2. c4 c6 3. Ng1f3 e6 4. Nb1c3 dxc4 5. e4 b5 6. a4 Bf8b4 7. Bc1d2 Ng8f6 8. axb5 Bb4xc3 9. bxc3 cxb5 10. e5 Nf6d5 11. Bf1e2 Bc8b7 12. Qd1c2 h6 13. Qc2e4 f5 14. exf6 Qd8xf6 15. Nf3e5 O-O 16. Be2f3 Qf6f5 17. Qe4e2 Nd5f4 18. Bd2xf4 Bb7xf3 19. Qe2xf3 Qf5xf4 20. Qf3xf4 Rf8xf4 21. Ke1e2 Rf4f8 22. Rh1b1 a6 23. Rb1xb5 Nb8d7 24. Rb5a5 Nd7xe5 25. Ra5xe5 Ra8b8 26. Ra1a2 Rb8b3 27. Ra2c2 Rb3b1 28. Re5xe6 a5 29. Re6c6 Rb1g1 30. g3 Rg1g2 31. Ke2f1 Rg2xh2 32. Rc2a2 Rh2h5 33. Rc6xc4 Rf8a8 34. Kf1e2 Rh5f5 35. Ke2d3 a4 36. Rc4xa4 Rf5f3 37. Kd3e4 Ra8xa4 38. Ra2xa4 Rf3xc3 39. Ra4a7 1-0
Game 5. With white a4. Black tries in vain to keep gambit pawn. 1-0.
White 2245
Black 2035
Game 8067645
[Event "January 2011 Mini Banded Octet I 1800+"]
[Site "http://www.redhotpawn.com"]
[Date "2011.01.05"]
[EndDate "2011.02.23"]
[Round "1"]
[White "Brodaty"]
[Black "moon1969"]
[WhiteRating "2245"]
[BlackRating "2035"]
[WhiteElo "2245"]
[BlackElo "2035"]
[Result "1-0"]
[GameId "8067645"]
1. d4 d5 2. c4 c6 3. Ng1f3 dxc4 4. e3 Bc8e6 5. Qd1c2 b5 6. Nf3g5 Qd8d7 7. Ng5xe6 Qd7xe6 8. a4 Ng8f6 9. Nb1c3 Nf6d5 10. axb5 Nd5xc3 11. Qc2xc3 cxb5 12. b3 Qe6d6 13. bxc4 bxc4 14. Bf1xc4 e6 15. O-O Bf8e7 16. Bc4b5 Nb8d7 17. Bc1a3 Qd6b6 18. Bb5xd7 Ke8xd7 19. Rf1b1 Rh8c8 20. Rb1xb6 1-0
Game 6. Without white a4. Black keeps the gambit pawn but loses the exchange. 1-0.
White 2073
Black 2035
Game 7960231
[Event "November 2010 Mini Banded Octet I 1800-1850"]
[Site "http://www.redhotpawn.com"]
[Date "2010.11.26"]
[EndDate "2011.01.14"]
[Round "1"]
[White "mikelom"]
[Black "moon1969"]
[WhiteRating "2073"]
[BlackRating "2035"]
[WhiteElo "2073"]
[BlackElo "2035"]
[Result "1-0"]
[GameId "7960231"]
1. d4 d5 2. c4 c6 3. Ng1f3 e6 4. Nb1c3 dxc4 5. e4 b5 6. Bf1e2 Bc8b7 7. O-O a6 8. Qd1c2 Ng8f6 9. Bc1g5 Bf8e7 10. e5 Nf6d5 11. Bg5xe7 Qd8xe7 12. Nc3e4 O-O 13. b3 cxb3 14. axb3 Nb8d7 15. Ne4d6 Nd7b8 16. Ra1c1 Nd5b6 17. Nd6xb7 Qe7xb7 18. Nf3g5 g6 19. Ng5e4 Rf8c8 20. Ne4d6 Qb7c7 21. Nd6xc8 Qc7xc8 22. Qc2d2 Qc8b7 23. Be2f3 Nb6d5 24. Qd2g5 Ra8a7 25. Qg5d8 Kg8g7 26. Bf3xd5 exd5 27. Qd8f6 Kg7g8 28. Rc1c3 Qb7e7 29. Qf6xe7 Ra7xe7 30. Rc3d3 Re7e6 31. f4 Nb8d7 32. b4 f5 33. Kg1f2 h5 34. Rd3c3 Kg8g7 35. g3 Kg7g8 36. h3 Kg8g7 37. g4 fxg4 38. hxg4 hxg4 39. Rf1a1 Nd7b8 40. Ra1g1 Nb8d7 41. Rg1xg4 Kg7f7 42. Rc3a3 Nd7b8 43. Ra3h3 Re6e8 44. Rh3h7 Kf7e6 45. Kf2e3 Re8g8 46. Rg4g5 a5 47. f5 1-0