Free software Flashbake captures working files and adds details like the weather and your Twitter status to each version automatically. Why? I don't know.

Newsticker provides a newsticker for Emacs.

Unfortunately, no Mac version. But this will turn PDFs into Kindle-approved files. Hopefully.

Shame I missed it in Boston.

Pretty slick. $20 a year seems reasonable, but I haven't checked it out in-depth.

You take all those travel confirmation emails that you get from your travel agent, hotels, car rental agencies, etc, and you just forward them to plans@tripit.com. That's all you have to do.