If you've used the iPad version of Twitter, you probably love the preview of websites within the app. Well, me too, that's why I decided to try to re-create this behavior on the new Twitter.
So I created a Chrome extension called: Twitter Desktop Notification & Preview URLs (I suck at titles). You can install it by going here.
This is a very early implementation. Detected URLs are displayed in the sidebar under the tweet, you can use "p" to view a fullscreen preview of the URL and navigate with the arrow keys if you have multiple URLs in a tweet. I've also added the ability to have Desktop Notifications alerting when New Tweets are received.
There's probably some bugs, feel free to contact me via Buzz or Twitter and I'll try to fix them as soon as possible.
Hope you enjoy it!