Great to use when you are in need quick leads without having much time or experience with lead generation tools! The customer service can be really bad sometimes too if they do not understand your question/need quickly enough (sometimes it takes more than one email back + forth before I get an answer).
We used them primarily as appointment setting tool but we have also found that most times our qualified contacts will end up becoming clients even though their needs were met via this website only once so far - which was good news since no money exchanged hands at all yet :) Really helpful especially because there's nothing else out here like us right now where people would just go straight from searching product descriptions online into making phone calls instead.