nickel and dime:
Traditionally used as part of the larger phrase "To be nickled and dimed to death", referring to the undesired price of upkeep for a certain item. More fundamentally, it refers simply to seemingly hidden ongoing expenses which, over time, add up to a large expense.
Thanks Mindcycle, this is exactly how I would define nickle and diming. They sell you a product and then steadily release DLC (which most likely was developed in parallel with the game, or is being developed in lieu of something silly like a patch) over the lifecycle of the product. Then, about 1 year after the release of the game, they bundle it all together and sell it as a GOTY version that includes the full game finally.
e.g. Fallout 3
I would probably like to play Dragon Age, but I have a good backlog of games to keep me busy, and intend to pick it up right around a year from now; at which time I will get the full game for $50 or less, and it will be patched and relatively bug free (I have no idea about the current state of this game, but most PC games require patches over their lifetime).
OT: I will never, ever buy a Bethesda game on release day again. Oblivion was buggy and Fallout 3 was a never ending crashfest for me when they were released. Also, both released lots of DLC and then bundled it all together roughly a year later; all the while taking away precious time away from developing much needed patches for each game.