⇥ Riddle me this, and win $50 in php|architect coupons

I’ve wanted to do this for a while, but haven’t quite gotten around to it due to impossible work constraints, so, here it goes:

The Tabini Challenge, v. 1.0
Here’s a challenge that requires a combination of skill, patience and knowledge about me and what I do for a living. The winner (see Rules, below) gets a $50 gift certificate for our online store at php|architect:

973862157 61 14 3
973862149 94 30 3
973862157 5 2 5
973862149 247 15 1
973862157 32 21 9
973862149 84 5 7

Rules:

• The winner is the first person from whom I receive an e-mail with the correct answer. I am not responsible for e-mail messages that get lost in any way, and the timestamp on my end is the final judge of who gets here “first”.
• The riddle does have a solution—but it is, of course, possible that I have made a mistake in calculating it. In that case, I will void the contest and post a correct one.
• The winner will receive a $50 gift certificate that can be spent at the php|architect online store on any product, without any limitation, so long as the entire $50 is spent on a single order (sorry, that’s the way our store works). The coupon will be worth for one year from the date of issue.
• The contest closes on May 31, 2008, at which point I will post the solution.