The Timeline gadget, it turns out, is one of the lamest things I've ever seen out of any company. It's supposed to be -- or, at least, could be -- a competitor to Twitter or to Facebook's status updates. Its claim to fame is that it takes your activities and shows pictures of them. If you're reading a specific book, for example, if will show a picture of the cover of that book. It also places your status updates into a timeline, so you can see what you've been doing over time. Cool!
Unfortunately, Timeline is unusable.
You're limited to only three possible activities: "I'm reading," "I'm listening to," and "I'm watching." In other words, the gadget assumes you're nothing more than a full-time consumer of media. You don't have a job. You don't talk to people. You don't create anything. Google assumes we're all like those tubby weaklings in "Wall-E," who fly around on levitating chairs with a screen in our faces all day, consuming media and large beverages.
All Google had to do was create an option to type anything you want, and this gadget would be a really cool alternative to Twitter and Facebook. But without that tiny option, it's perfectly useless.