I have used this software for about 4 years now, it's very easy to use but also has some great features that are not easily found elsewhere. The only thing i dislike is that sometimes you don't know what an error means until after it happens (although they do give information so you can fix it). But overall i would say its worth using if your looking for something simple and reliable! We use the tool in our business as we help with website optimisation at all stages of development, from design through to launch.