Google's personalized homepage - iGoogle, offers two options to backup your gadgets and feeds at the bottom of the settings page.
Two options is there,
- Backup on Google's server
- Import XML file in your system
that's look like this,
Backup the iGoogle page on Google's servers - it's useful to backup your page before adding gadgets that might create problems.
Import XML file that includes all the tabs, layouts and themes, the feeds, gadgets and their settings. The XML file can be imported in any iGoogle page, so this is a good way to migrate the page to a different Google account.