There's no one particular favorite contribution I've made. Regarding someone else's contribution, though, there's Shog9's Meta question Stack Overflow 2020 Q1&2 Company Commitments Report Card. Even though he was let go by the company not that long before, we were fortunate that he still put in a lot of time & effort (along with getting some help from several current and former SO/SE users, along with "a healthy jigger of Jack Daniel's") to write an interesting & quite detailed summary in the form of a report card of a lot of information, namely of the various company commitments (and the progress on them) over a period of half of a year. I think he did an excellent job summarizing everything but, regarding his grades, I agree with several other people that he was at times being somewhat generous.

This post also came at an important time considering the overall relationship between the company and community was just starting to improve after a disastrous second half of 2019. It helped to remind at least me, and I trust others as well, that the company had made various important commitments and were following through on them to various extents. The post provided a good summary of these commitments, as well as to what degree they have been implemented so far, which could be used to refer back to when checking in the future on how much more progress had been made on them.

There's no one particular favorite contribution I've made. Regarding someone else's contribution, though, there's Shog9's Meta question Stack Overflow 2020 Q1&2 Company Commitments Report Card. Even though he was let go by the company only about 6 months before, we were fortunate that he still put in a lot of time & effort (along with getting help from several "current and former SO/SE users", along with "Jack Daniel's Tennessee Whiskey, for inspiration and motivation") to write an interesting & quite detailed summary in the form of a report card about a lot of information, namely of the various company commitments (and the progress on them) over a period of half of a year. I think he did an excellent job summarizing everything but, regarding his grades, I agree with several other people that he was at times being somewhat generous.

This post also came at an important time considering the overall relationship between the company and community was just starting to improve after a disastrous second half of 2019. It helped to remind at least me, and I trust others as well, that the company had made various important commitments and were following through on them to various degrees. The post provided a good summary of these commitments, as well as to what extent they have been implemented so far, which could be used to refer back to when checking later on how much more progress had been made on them.