If you want to apply to work as a developer at Bandcamp, you start at their jobs page and they have the usual spiel — you should be like this, you shouldn’t be like that. But at the end of the job description, they tell you to check the HTTP headers. This leads you on a treasure hunt that requires a love of puzzles and some background as an engineer. I was happy to have made it to the end, but I won’t spoil it for you.
The treasure hunt was a lot of fun and I think it’s going to make an engineer more interested in working with the company. Sure, it’s a little quirky but it requires a slight time commitment (it took me about 15 minutes to figure it all out) and a knowledge that will immediately cut the wheat from the chaff. I love this kind of creativity.