I like that it can be used for so many different things, from searching documents in PDFs or MS Office formats all sorts out there! The interface could use some work as well but other than this i don't have anything bad about docfetchers features at least not yet anyway :) We are using document fetchery primarily just looking up contact info within our org when we get lost papers etc., sometimes even finding old emails by doing searches through their database which has been very helpful with my job duties now haha.