Recently, Amazon (AMZN) CEO Jeff Bezos announced that he and his wife had given $2.5 million out of their own pockets to advance the same-sex marriage cause in Washington state. Preceding them were Microsoft's (MSFT) founder Bill Gates and its current CEO Steve Ballmer. On June 29, they each donated $100,000 to the legalization campaign in the state. So did Microsoft itself, two months earlier, when it put $10,000 on the line. And at the end of May, a Starbucks (SBUX) LGBT affinity group donated $1,740 to the cause.