Here’s my Feedburner graph of # subscribers over time:
As you can see, in the first 12 months, this blog slowly built up (linearly, pretty much), an audience of about 1000 readers. The big spike that you see is when Scoble linked to this blog – since then, in about 2-3 weeks, the blog picked up its 1500 subscribers.
The traffic was actually more than I’ve ever gotten being on Techmeme or Hacker News, which tells you how much traffic he gets. Pretty amazing!