I would say feature.<p>If you have to sign up to file a bug, the bug is going to be important to you.  You&#x27;re likely to put a bit more effort into making sure the report is well-written.<p>If you already have a github account, you will probably simply do a drive-by bug report on anything that looks like a bug.<p>Bug reports are the lowest level of &quot;contributions&quot;, and losing some people filing them isn&#x27;t a big loss.