I can't think of anything that we disliked about our experience with Fm! They are extremely professional in every aspect from their customer service to project management during implementation/maintenance phases etc., they're quick responses have been invaluable for us as an agency working remotely across multiple time zones.
We've worked very closely together over two years now - so far there's not really any bad things said or done by them which has made it easy to trust each other completely when projects come up requiring close collaboration between teams spread around different states & countries (we work remote). The only downside would be if you do require more detailed technical support than what is available via chat within fahrenheitmarketing.com but this isn’t something i personally experienced while using them myself though may help others who need further assistance beyond just general questions answered online at FAQ sections found throughout.