Google released "WaveThis," a set of easy ways to create a discussion in a wave directly from the site you want to share. It's less public than broadcast tools and more interactive than using email. When you click "WaveThis" button, it'll "copy title and URL" of the post & drop it in a new wave. Then, you can add your friends to wave to start discussing.
Of course you'll come across stuff on web that you want to discuss in a wave where there isn't a WaveThis button ready for you to click. To help with that, we've created a WaveThis bookmarklet and a Chrome extension. To use bookmarklet, drag the link to your bookmarks in Firefox, Safari or Chrome. After that, any time you see something interesting on web you want to discuss, just select text that drew your eye, click that bookmark and presto! you've a new WaveThis extension for Chrome works same way.
If you are a webmaster, you can now craft a URL that, if followed, automatically creates a new wave with a specific title and content, like: https://wave.google.com/wave/wavethis?u=http://googlewave.blogspot.com/2010/06/wave-this.html&t=Wave+This&c=Awesome+new+service
Now, a wave wouldn't be a wave if all you could do was copy over some plain old text. Websites that want to incorporate some interactivity into resulting waves can specify a helper gadget. For e.g., a WaveThis link to a YouTube video looks like this: http://wave.google.com/wave/wavethis?g=http://wave-this.appspot.com/public/youtube.xml&u=http://www.youtube.com/watch?v=rDu2A3WzQpo&t=Look+at+this+video
The wave that's created has video embedded so that your friends know what you're talking about, like this:
More Info: WaveThis