for stuff at work i use the internal company wiki's blog option. on a day where i learned something i didn't know before and want to keep a record of it, i blog

for stuff at work i use the internal company wiki's blog option. on a day where i learned something i didn't know before and want to keep a record of it, i blog about what i learned with a"TIL" tag and subject header. it's company-public and i've had others comment on how some of my TILs helped them. i've also had others offer their own insights to what i learned and subsequently learned more.