And no. That just means my wife is good at drawing attractive women.
That's a good quality to have in a wife. ;-)
Thought I'd throw in my experiences. For a while I maintained a "story guide", which I would update after every storyline (or at least, that was the theory; it didn't always happen that smoothly). However, it was just a summary of each storyline. I ditched it a while ago, and looking back on it, I realize it was a pretty bad idea. No one comes to a webcomic to read that much text, they want art as well.
I think Rob has a good point - if you have a book with the first year or so of strips to sell at conventions or whatever, people will be more likely to be drawn into reading the rest of the comic. I've seen this happen on a number of occasions for Bardsworth.
Also, make sure your archive is very user friendly. You're in the clear, because you have one of the better archives I've seen. I really hate it when people just have a calendar archive or, God forbid, a drop-down menu of the storylines. It may be worth looking into a script to allow people to bookmark where they left off in the archives, so they can just come back to that point (yes, I know, people can just bookmark it in their browser, but the less work on their part the better).
Lastly, it comes down to just making sure that each and every strip you post is so good that it MAKES someone want to jump into your archives. :-)