Google Chrome ver 4.0 might be the most stable version so far still its far from being a perfect release. It lacks some basic features which Google hopes to incorporate via extensions. One of the basic feature is auto-detect of feeds of a page.
In Firefox or Opera if a page is visited with RSS subscription in it, it shows a feed icon on the address bar and by clicking it RSS feed can be subscribed.
But in case of Chrome no such built-in function is available. To resolve the issue Google developers have developed RSS Subscription Extension to make the browser user friendly.
RSS feed extension comes with four predefined feed readers (Google Reader, iGoogle, Bloglines and My Yahoo). It also allows the addition of any web-based feed reader of the choice of user through the Option page for configuring the extension.
The latest build of the extension has the added ability to subscribe to multiple feeds on the same page. It is available for both Windows, Linux and Mac OS X but for Linux build of Chrome, its still a beta build and for OS X its developers build. 
Chrome extension can be downloaded from here.
Dude, this feature in available in Firefox since long ago.
There is only one thing that I find impressive in Chrome, its Start Time. Else its a piece of crap.