From the description:
1-3 messages per day, safe for viewing in the office information is not used for advertising or spam *.
* We reserve the right to use foul language in comments to articles like: 'Why Ruby / Rails / # {your_favorite_gem} sucks', as well as the right to advertise open-source technologies and events of the Rails community
Source: https://habr.com/ru/post/137311/