So, this might come out as a rant. It is. Recently some of my purchased apps from the MacAppStore was taken down - directly of my previously purchased list or my Purchased list. Apps that I'd like to reinstall after a macOS Sierra clean install. For instance ColorSchemer Studio 2 - it just went bye bye. And so I went to the author's website and it said that "Unfortunately ColorSchemer software is no longer available for sale or supported." WTH. I get it that any programmer would take down their application entirely from either the Mac App Store or the internet as a whole.. I just don't get why I - THE USER - has to run around the internet finding out that any app is not available anymore. Another example is a game: Superfrog from TEAM17 - I can download it but there is no website on the MAS for it anymore. The same with apps such as Entropy and Spectrum from http://www.eigenlogik.com/ Why can't the developers at least answer a query about the reason for their silence and removal of the Entropy application from MAS. Who's thinking that I'm spending a massive amount of money for Entropy and Spectrum just to have them removed from the MAS and not being updated. Removed from MAS but I can download them still. If any user cleans up their Purchased list - I suggest being cautious - the apps might just be gone forever once that is done. So don't ever clean up legacy apps allthe way from Mavericks or Lion. That's my advice. I think that Apple - WHO'S IN CHARGE OF THE MAC APP STORE - should give we users much more information about what is happening with their App Store on the Mac. From now on I'm being overly cautious with purchasing anything on MAS. A game that I bought - that is also removed - is the GRID car racing game. The GRID 2 game is there. I hate this kind of poor communication - who lays down hundreds of $$ on the MacAppStore and to the developers only to be expanded in the ****** by all parts. Information - we're living in the age of information and the Internet for Heavens Sake- but I guess that a circular building over in the US of A is more important to get news about than sending an e-mail(again Internet + information) to the App Store connected e-mail. TURDINESS IS ALL I SAY. PIECE OF **** DEVELOPERS AND THE COMPANY THAT IS APPLE.