I like how easy it was to set up my first campaign with them! They have an amazing support team who are always willing to help you out no matter what time of day or night its at (which can be hard in this industry!).
The only thing i dislike about crowd riff so far has been their pricing structure which isn't very user friendly for budgeting purposes but thats something they're working towards fixing soon hopefully? Not much really as everything seems pretty good from experience thusfar :) Great tool if your looking into using social media platforms such as Instagram etc to drive traffic back to website/blog posts - just make sure all images used meet certain rules before posting otherwise users may report those accounts causing problems within apps eg Facebook & Twitter.