title: Any big projects using Pypy?
body: <p>I have a very large heterogeneous Python codebase that uses Django as the front-end. This codebase is deployed alongside several servers that are beginning to show the strain and we're looking for ways to speed things up while we re-architect the codebase, and to keep the new code running fast.</p>
  
  <p>We're currently looking at Pypy but it seems a bit iffy. It has many limitations and requires refactoring a lot of code (can't concatenate strings with "+"?).</p>
  
  <p>Does anyone have experience with it? Are there any large scale websites using it?</p>