blabla.com/content/blabla/
 

Hi i wanna make web site as you may guess and i wanna make navigation url like : "cnn.com/content/blablanews/" i read few articles and there is a method like "redirect from 404 page" method. i wanna read more articles about that but i cant find that methods name. So i cant googling. Maybe you can tell me at least name of the method. And if cnn's method is diffrent please let me know.Thanks and sorry for english.

Re: blabla.com/content/blabla/
 

The best way to do that is either to use htaccess (apache) server rewrites, or to use a CMS with that capability.
If you have a bunch of .html files, it might be a good idea to put them in folders and just keep it that way, because people won't be bothered by the change of URLs.
If you want to have a custom 404 page, use the htaccess to use a custom 404 document (Custom 404 Pages)