Done well: I really like the daily prompts to comment, I think they’ve done a lot to encourage me to stick with it. They’ve also been nice because I get to see everyone else’s responses.
Done badly: I wish more days had direct connections to the bug list (i.e. more challenges directly of the form “pick a bug from the bug list and apply today’s technique to it”). It’s harder to motivate myself to tackle challenges on the bug list when it’s implicit that today’s technique can be applied to them than it is when it’s explicit.