I've posted about Springpad before, and a good service is now even better. Springpad has added post by e-mail. Check your settings to get your personal Springpad email address, but here is most of what they provide in Settings:
Save anything to Springpad by sending an email to springit@springpadit.com from the email address on your account, or use the personal email address to send something from any email address.
Send a note or link to Springpad to save it, or to be more specific send with a subject line like this: Type: title @notebook #tagFor example: "Task: Pickup Drycleaning @Stuff to do this weekend #chores #household"