I've used them for multiple projects in my past - they are very professional with high quality results! They have been able to extract information from many different sources that were not otherwise retrievable by myself (or other tools). If there was something we needed done differently it would likely change how much time our project took to complete but overall satisfaction has remained at 100%. There is no downside as far as I can see so far. The only thing I dislike about this service is when their rates go up because of an increase in demand, which seems like every few months. It's easy to get work out of these guys without having any direct contact. The best part is that it gives me an opportunity of getting my hands dirty with every project I get associated with this platform. It has helped in building websites from scratch as well helping us build our own products for which we needed content. This tool has been very helpful when writing articles like blogs etc., where one can spend hours doing research but then not able to write something decent due to lack of knowledge about some technical aspect related to their field.