Starcraft 2 - make money from custom maps

During the Battle.net panel just now at Blizzcon, it was announced that Starcraft 2 will have some really kick ass tools for map/mod makers. In addition to this, they are going to be implementing a "marketplace" where map/mod authors can place their creations for download - and charge for them if they like.

The goal appears to be to get more people making mods on Blizzard games, instead of a competitors platform - I say appears because this *is* a stated goal, just not sure it's *the* goal.

It all sounds really damn cool, and I for one am looking forward to it, even though I'm not a big SC fan (omgsaywhat?!)