I like how it can crawl any webpage, even if you don't have an account with them. It's easy to use, but sometimes you need more control over what pages are crawled. You cannot set specific URLs or just certain categories/tags. Also, when I tried this software for my client they couldn't download all images from some pages because they were too large. This really slowed down their ability to do SEO work in Google Analytics. We needed something to help us get information about our clients' websites so we could track changes made by our team members. Using Powermapper gave me access to everything I was looking for without needing to spend money on another service.