My thoughts about pw:
If you just started with pw, maybe you created your First Page and saw how pw Works and handles data you think uh yummi nice CMS.
Well thats fine and correct,pw acts, feels and looks like a CMS.
You then dig deeper into the API, you understand how the different fieldtypes are working and you get a good overview.
You probably think at this point: could I use pw like a Database?
You Set your first page relation, count the arrays and you Play with the Data and you think: WTF!? Is this still a CMS?
The longer you use pw, the deeper understanding of the API, you finally realise which great,strong and powerfull toolset Ryan just handed right into your hands.
At this particullar point the term CMS would not come to your mind anymore.
PW could be used like phpMyAdmin, just create tables,rows and data and work with them, but a Way more easier without even knowig what MySQL really is.
Some of you might know my Intranet Application i'm working on, this is all made with pw and some little template php scripting.
The next days I will Show a Little preview of an App i'm also working on, and yes everything PW driven.