Award Wallet lets you input your airline, hotel, and many other online accounts for automatic updating. You also get a weekly e-mail with updates to your accounts if you choose. I really like the warning that tells you if your points will be expiring in the near future.
The site is not perfect. There are some missing accounts and I have a few that will not update correctly, such as Southwest Airlines. However, it is a great step forward and it looks like they are adding new accounts regularly.
I have been using the site for about a month, and I suggest it to anyone who likes financial aggregation sites.