From the good folks at 37 Signals:
So far we’ve sold over 23,000 copies of Getting Real in PDF format. We introduced it on March 1 of this year, so we’re pretty thrilled with the results.
But 23,000 readers isn’t enough. We want millions of people to read the book. So today we introduce two new flavors that make the content even more accessible. And, in one case, completely free.