Simply click on the links under “Subscribe” in the left-hand column of the Blog Search front page to subscribe to any topic or story in any feed reader, like Google Reader. Google also offer an iGoogle gadget that lets you embed the Blog Search front page right inside of your iGoogle page or any other page where iGoogle gadgets are accepted. You can browse topics and drill into stories from within the widget, and you can customize the gadget to choose which topics you want to follow.
And Google have added two new features to the Blog Search homepage to better help you discover what people are talking about right now on the web: Hot Queries and Latest Posts.
Hot Queries lists searches currently popular in Blog Search — it’s an easy way to quickly dive into the trending points of conversation on the web.
Latest Posts, on the other hand, shows new posts from popular blogs. While Hot Queries highlights what people are looking for, Latest Posts lets you find out about stories even before people start searching for them.
So use these tools to help you research your markets and plumb new depths of your inch-wide, mile-deep niche!