The Unofficial Apple Weblog has posted 6 Things You Need to Know about iPhone SMS. Handy info to know in general but the tip that jumped out as a good workaround for getting information onto the phone instantly is that you can email a text message directly to the phone. You're limited to 160 characters (Twitter users should feel right at home) but for a quick phone number, address, or directions it might come in handy.
Send your text message to firstname.lastname@example.org (e.g. email@example.com, just use the numbers, no hyphens, etc). Keep your message brief. Both the subject line and the message arrive on the iPhone.
I know I've been a tad iPhone obsessed. Regular non-iPhone blogging will resume shortly. Thanks for your indulgence.