To fully use the functionality of Google Wave, try using a robot, gadget or embed. Keep in mind, that some of these only work in the developer sandbox environment. I have both a developer and a tester login for Google wave.  For instance, the twitter bot called “Tweety” doesn’t work in the tester environment, only the developer sandbox. Not sure which one you have, look at the top left if you dont see the “dev preview”  image on the top left, then your a tester. Below are links to the robots, gadgets, embeds and installers from Google.