From an email I got this morning:

Date: Fri, 16 Apr 2004 01:55:22 EDT
…
Hurry, the clock is ticking on your taxes! Pay your federal taxes with your Discover Card

Last I looked, the deadline was yesterday. And while it may technically have still been April 15 here on the west coast when they sent the message, I think you’d be hard pressed to find a post office open at 11pm.

Aside from that, I find the idea of putting taxes on a credit card somewhat disturbing, though if you don’t have the money on hand, I suppose it may be the best you can do.