Recently a new service called BlogRush is launched to help bloggers find readers with common interests. You just need to register and register yout blog in appropriate category . After that you will get a blog rush widget(similar to one in left column) code . You will earn credits for each page impression. These credits will be used to display posts from your blog on some else's blog . Looks pretty good, but its still early times.

Are you tired of logging into your Adsense Account multiple times a day to check your earning. Firefox have introduced a new plugin called Adsense Notifier which Displays your Adsense earnings on the statusbar.

Download it from Firefox Site