Yes. They did for a very long time. I'm not sure if they still do as I haven't looked into it in a long while. They didn't want people's "low effort" GM notes from trending and specially banned GM and "good morning" from trending. My good morning notes almost always added more context and a positive call to action. So, I wasn't overly impressed and I altered my good morning to Ԍood morning. The special G was all that it took to get past their filter. ¯\_(ツ)_/¯