Is it possible to add "/" in MKTO LP urls?

Thanks @Jim Thao​ and @Sanford Whiteman​ for your help. We do have a strict convention naming for urls that is working fine but some people in my company don't find them user-friendly. I'm creating some vanity urls for some banners etc. but the request would be to make more urls look nice and that's where I hit the wall of maintenance, consistency and INTL support.

BTW I personally believe that nobody will remember anyway an url past the .com, eventually if there is just one word after like www.company.com/download or /contact ... but that's a different story!

Should I use personalized url or is this only to have lead name inside url?

A pURL is meant to associate leads via URL, yes. It wouldn't ordinarily have anything to do with your project.

Interestingly, you can take advantage of the way pURLs work to create a second (but only a second, not a third) level of paths. Create a dummy pURL-enabled page en.html, another de.html, etc.  All these pages do is redirect to your real LPs using a predictable URL pattern.  In this example, you would probably append the language to the last part of the path.  So info.example.com/en/big-data-sandbox gets redirected to info.example.com/big-data-sandbox_en. The final URL the lead sees after redirection will be the single-level LP URL, but maybe it looks a little better in an ad.  You have to be strict in your naming, though. (This isn't something I've ever put into prod because it wasn't worth it, I just know it works!)

If a self-maintaining path hierarchy -- without adding Redirect Rules in Marketo as Jim correctly points out -- became a hard requirement, you can run your pages over a CDN that can do rewriting.  Again, you'd have to be strict in your underlying Marketo naming (although in this case the end-user wouldn't see the pages' real names).