I started using Promo Text on a few products for just that - periodic stock notices, arrival dates, etc. When used this way, it becomes a field whose message may change over time so managing those changing messages seems important.
BUT, I can't find Promo Text as an exportable field in Export Data, nor can I find Promo Text as a searchable field in Advanced Search. I hope I've missed something and that those standard tools are offered; I just haven't found them.