As many of you know, I've been working every weekend doing signings in local bookstores. Because I'm usually at the front of the store, I get a lot of questions. And the one I get asked most often is, "Where can I find those Twilight books?"
Here's a great article on what Stephanie Meyer did to build her brand. More importantly, notice that she didn't reach a tipping point (see Malcolm Gladwell's book Tipping Point for a better understanding of the term) until Book #3 in the series.
And here's the link to an archives of articles by Malcom Gladwell