The features that I like most are 1) Easy to use tool, 2.) Very easy for beginners who don't know much about using tools such as this one but want something simple & free 3).
Great support team! There is nothing really bad or negative in my opinion with regards to SMT (SocialMediaToolbox), it's an amazing product which has helped me grow our business exponentially through various ways including Facebook ads etc.. If you're looking into starting up new campaigns then definitely consider trying out smt first before jumping right away onto another more expensive platform- otherwise i would say stick w/it until they improve their service further because currently there isn'';s not too many things wrong atm other than maybe some minor UI issues here nthere along side general slow loading time sometimes when doing large tasks via facebook ad manager - so.