What does the software or service do well? The calendar view has been a game-changer for managing multiple clients; you can view individually by client (or subject) or view everything on a master calendar. You can click and drag to reschedule and label/color code. The workflow of composing a template post and then customizing it for each social network (formatting + image) is fabulous, and being able to publish automatically to Instagram via Buffer was key for us. The save draft option lets you park an idea quickly to flesh out and schedule later. I've used many different social schedulers, including ones that cost much more, and I like Loomly best. Customer support has been quick and very helpful!
What does the software or service not do well? This is only a minor inconvenience, but I wish you could change settings for all calendars at once (time zone, default view) rather than individually.
What do you wish you had known about the software or service before using? Nothing comes to mind - it's all very intuitive! Love the post ideas, e.g. national food holidays, and the options to submit posts for internal approval, schedule for later, or publish now.