I have Jott assigned to a quick-dial key on my cell phone. When I think of something, I just dial it, tell the name of the folder or service that I want the message to go to, and it shows up in that folder. There is a desktop application that you can use to manage the messages you've sent yourself or you can use the website. You can have Jotts sent via e-mail, text message, or carrier pigeon. (They're still working the last option out, but it may very well be coming.)
The real beauty of Jott is that the designers are working to interface with lots of other online entities. You can send a Jott to Amazon.com and you will get the top 5 search results for your request sent as an e-mail. You can send a Jott to your Google Calendar and have an appointment show up. You can send a Jott to Remember the Milk and add something to your to-do list. You can send a Jott to Twitter and update your status. You can Jott reminders to yourself and have them sent back to your phone or e-mail a few minutes prior to what you might forget. You can also send Jotts to other people on a contact list. I haven't used this feature myself, because I am more accustomed to using instant messages and e-mails, but some folks might find it useful.
You can find out even more about Jott and sign-up by visiting http://www.jott.com and clicking on the Learn More link.
God's blessings on the ministry you do each day,
Pastor Andy Arnold
ELCA Youth Ministry Network's Tech Geek