How to handle a lot of simple unique URLs (for click's statistics)?
A great module to aliases auto-generation is PathAuto. It will allow you to define patterns to your url's using tokens, things like:

article/[title-raw] 

will generate:

www.example.com/article/my-blog-post

Once you install the module, go to:

Administration > Configuration > Search and metadata > URL aliases, in the "Patterns tab" (admin/config/search/path/patterns).