motherload

[...] there was no way Apple could win the motherload of customers [...]

--Peter Burrows, "Should Apple Open Up?", Business Week, January 11, 2006

I've seen this a couple other times lately in other places. It's "mother lode." It has nothing to do with loads.

Update: I contacted Business Week, and they quickly corrected the spelling, so this item is no longer on their site.