I like how easy it was for me as an admin or project manager, who has never used this program before to get up-to speed quickly with all of its features! It's so simple yet very powerful at managing multiple sites/projects from one location. There isn't much in terms of dislikes but maybe more options would be nice? We are using OTP mainly because we have many different clients across Canada (and other countries) which means having everything centralized makes our lives easier when dealing wtih them via email etc.