If you manage multiple wordpress websites the guys at InfiniteWP have create a free service you can download and install on your server. You have a single admin area to update plugins, wordpress versions and backup all from one screen and it is for FREE. check it out http://infinitewp.com/.

No… I do not work for them at all, just bought their premium plugins, which was well worth the investment and I must say I am truly impressed.

On top of that they have a limited offer which will expire in the next 18 hours to buy all their premium add-ons which include:

1. Install / Clone Wordpress
2. Shedule regular backups
3. Back up to cloud services like drop box, amazons3 or to an ftp location
4. Manage usernames and passwords
5. Save code Snippets
6. Client plugin branding
7. Google analytics on multiple blogs
8. Mange posts comments on multiple blogs
9. Bulk create posts, pages and links on multiple blogs
   

@amyhallbiz thanks for the feedback, but as far as i know the word press multi-site feature is when you run multiple websites off one domain. What i have show cased above it the ability to manage multiple websites on separate domains.