The simplest way of describing a tiling WM is to imagine opening your file manager. But then you want to open it again so you can drag and drop files from one window to another. So when you open a second file manager, they overlap and obscure each other. So if you could hit a button that splits the screen in half and puts each fm window into each half, you then have an organised, structured presentation of the two file manager windows. Another example is if you open Thunderbird to check mail. If you then click on "write" to compose an email, this opens in another window. A tiling WM will split the screen and put both in plain view - the main window and the compose window.
Ah, whilst I was typing this you posted about other OB tiling. Had a quick look at your links. I only fell over Pytyle a couple of days ago, and didn't even know about the possibility of tiling for existing WMs. The thing about Pytyle is that it is a) current, and b) built specifically for OB. It's default is normal floating windows, but a single keyboard command will round up a bunch of windows in a desktop and tile them - no overlapping or hiding. Again, that can undone at the click of a button. I find it particularly useful with smaller things, like having a file manager, terminal and editor all open at once. Much neater!
As to where we go with it, that depends on how much people try it and like it. It's only a simple Py script, and the pythonXlib is in repo, so it's worth test-driving. Put it this way, I now have it set ON by default, and along with the desktop right-click of OB, wonder how I used to get by without it!
[EDIT - have made a request for packaging - http://www.pclinuxos.com/forum/index.php/topic,94977.0.html
- Will see how it goes.]