If you haven't heard, Hacktoberfest has now become opt-in, to reduce the number of spammy, or pointless, pull requests that people were doing, to get the t-shirt. In this post I'll describe how to opt your repos in, how to find opted-in repos, and why your repo might not be turning up in searches.

So if you've got repos with issues that you'd be happy to receive pull requests on, add the topic hacktoberfest, and make sure that your repo turns up in searches.