Keeping track of your sites doesn’t have to be a hassle any more, thanks to Observu.com. The site allows you to keep track of an unlimited number of sites, all for free. This means that if one of your sites goes down, you’ll be able to find out promptly and get everything fixed before it really affects your traffic flow. When you create an account, you’ll be asked to input your email. This allows the service to contact you in case one of your sites crashes or needs to be updated. The service was created by Moving Labs. These folks have created other great apps, so we know what to expect from this one. The service thrives on simplicity, so it doesn’t matter if you are running a network of a thousand sites or you want to know how your blog is doing, you’ll be able to figure it out.