Social media is the collective of online communications channels dedicated to community-based input, interaction, content-sharing and collaboration. Websites and applications dedicated to forums, microblogging, social networking, social bookmarking, social curation, and wikis are among the different types of social media.
Trello is a free web-based project management application originally made by Fog Creek Software in 2011, that spun out to be its own company in 2014. It operates a freemium business model, as well as being cross-subsidized by other Fog Creek Software products.
tremolo (plural tremolos) (music) A rapid repetition of the same note, or an alternation between two or more notes. It can also be intended to mean a rapid and repetitive variation in pitch for the duration of a note. It is notated by a strong diagonal bar across the note stem, or a detached bar for a set of notes (or stemless notes).