Bookmark syncing is an incredibly handy feature; it allows you to keep your bookmarks synchronized across as many computers as you want, saving the need to recreate them each time you use a new machine. Apple's Safari has this feature, though it requires you to buy a subscription to MobileMe, and Firefox has it in the form of an unofficial plug-in. Google, however, are going to take that one step further and give it official support by building it in to their browser, Chrome, itself. TechCrunch has the news, though the feature isn't quite ready for public use quite yet.
The official Google Blog has an update on the feature, stating that as of today, it became available in the latest dev channel build. Tim Steele, a software engineer at Google, said on the blog, "Anytime you add or change a bookmark, your changes will be sent to the cloud and immediately broadcast to all other computers for which you've activated bookmark sync (using the same XMPP technology as Google Talk)." It uses your Google Account to store the bookmarks, and keep them by your Google Docs so they're handy to access. Keep in mind this isn't quite available on Chromium for Mac yet, but it should be shortly.
In order to get this working, launch Chrome with the "--enable-sync" command-line flag, and then you can set it up via the Tools menu. So, feel free to get the latest build of Chrome and try it out if you can't wait, but otherwise you can hold out until it's ready for public release, which will be fairly soon, no doubt.