100DaysToOffload is a challenge started by Kev Quirk at the end of April 2020 encouraging participants to post one article every day for 100 days. You can find the details on 100daystooffload.com.
My progress (2020): 100/100
My progress (2021): 11/100
I sometimes posted multiple articles with that tag on the same day. The progress above only includes one post per day, though.