Do we want code or design reviews on this site?

Code reviews expect considerable effort on the part of readers, more than a typical question. Furthermore, they are very open-ended — “I can't see anything wrong with this code” is a valid, but not that interesting answer (and what about “I can't see anything wrong either”, which is a different answer for every “I”?). Design reviews require less reading effort, but suffer from the same problem with answers.

This has been discussed about Stack Overflow before. The discussions I could find are:

• Is Stack Overflow an appropriate place for simple code reviews?
• Should SO allow "give me some feedback" questions?
• Where can I post code for others to review?

There is now a Code Review Stack Exchange site, but this should not influence our stance of what's acceptable on this site too much.

This meta question was triggered by What else could I lock down for buildbot runs?.