大家一起谈谈 运用spyfu 的心得，可以找到竞争对手的网站

What Does SpyFu Do?
SpyFu exposes the search marketing secret formula of your most successful competitors.

Search for any domain and see every place they've shown up on Google: every keyword they've bought on Adwords, every organic rank, and every ad variation in the last 9 years.

Learn how to connect with these domains, too. Find online and traditional leads methods -- social media, email, phone, and address -- you can't find anywhere else.

今天第一次接触到SPYFU, 感觉是十分有用的工具，对于我这个新手来说，可以找到竞争对手的网站，对于我新网站的设计还是有很大帮助的。
对于SPYFU,你们觉得如何呢?运用的效率怎么样？是否还有更好的此类工具分享。