Do you really want random people on the Web IMing you? Google thinks so. Yesterday, it added a chatback widget to Google Talk that lets you put a little badge on your Website or blog linked to your Google Talk account. When you are available, visitors to your site can start an instant message conversation with you. This is a similar idea to all the call-me buttons that have proliferated from startups like Jajah, Jaxtr, Tringme, and GrandCentral (now part of Google). But keeping it to text chat makes more sense. IMs can be ignored easier than a ringing VoIP line.