I'm too sleepy to look up the actual figures, but...
There are actually 1,250,000 official prizes being granted over a period of 457 days (fifteen months - 10/1/06 to 12/31/07*).
Prizes are being granted at six parks, plus Downtown Disney, plus via mail-in sweepstakes entries.
This works out to an average of 2,735 prizes per day, which means an average of 453 prizes per location per day (estimating the mailed entries as 3/100 of a 'park', since, afaik, entries are drawn once a month).
There are 57,125 total Epcot Dream FastPasses (i.e. distributed only at Epcot), and 95,970 for each of the other Orlando parks (ditto on the distribution).
This works out to 125 Dream FastPasses at Epcot each day, and 210 at each of the three other parks.
VERY long-winded way of demonstrating why I'm not surprised at ALL that Guests - especially those visiting right now - don't see any winners
*calculations are for the original YoaMD promotion only and do not include whatever will be done in 2008