I was a beta user, and what impressed me was how quickly they responded to messages and feedback. As a creative who uses tech across my workload I attend a lot of meetings and trainings. I also do a lot of independent work. I have a storehouse of information that is curated and easy to manger. I can delete old information and update it with new info very quickly.
There are great features I didn't even know existed until I explored. For example I went to a class and wanted to turn the information into informative posts. I uploaded in the class material then went to the "create" session and after 5 minutes chatting with the AI had about 6 very indepth and accurate information posts. And this was on a niche, let's say adult, educational class. It is important the information was correct and informative. I know the source, so I know it was.
Also, speaking of it--how flexible. No moralizing, to watering down, no "oh, let me tell the human what it wants." It's a memory bank and partner in making the information you have useful.
Since I'm busy the ability to chat up Liminary and ask it questions that I know I vaguely remember I learned somewhere is huge. An open question like, "Hey, what do I know about drafting a super prompt to do XYZ" makes me much more efficient. For my ND brain, I use it as very flexible backup. I can even build agents that do automatic things like track reader trends and have Liminary update itself on a daily, weekly, or custom schedule. That information automatically becomes part of my knowledge bank, and can be updated at anytime.
Very easy to use. Even sends me weekly recaps of "here is what you learned this week". When I entered the beta I wasn't sure how helpful it would be. I now am an annual member that uses it all the time.