Some time ago, Slack became a really popular tool for instant messaging within companies and communities. Many people consider it an awesome platform; many people consider it nothing more but a glorified IRC replacement. Technical merits and flaws aside, Slack and the many similar platforms are probably here to stay for some time.

During Hacktoberfest Poznań Meetup (October 2017) I gave a talk about copyright and how it affects FLOSS, along with a short overview of popular licences.

During Hacktoberfest Poznań Meetup (October 2018), I gave a talk about how people can support Free Software, apart from just programming.