Nice tool but not very effective. It has very low and easy for submitting and good for Blackhat SEO. So it's not necessary to risk and waste your time for it.
Hmm) I talked about it only because in Russia(i'm living here right now) it's very popular and we are actually have no good alternatives. Thanks for the opinions!
Yes, I have used it. It has several useful built-in tools that can help you check your Web site's keywords and rankings with popular search engines such as Google. It also has a robust Project Manager that individual designers and Web site design companies will find helpful in tracking their Web design projects.