Instant messaging (IM) is a form of communication over the Internet, that offers an instantaneous transmission of text-based messages from sender to receiver. In push mode between two or more people using personal computers or other devices, along with shared clients, instant messaging basically offers real-time direct written language-based online chat. The user's text is conveyed over a network, such as the Internet. It may address point-to-point communications as well as multicast communications from one sender to many receivers. More advanced instant messaging allows enhanced modes of communication, such as live voice or video calling, video chat and inclusion of hyperlinks to media.

Instant messaging falls under the umbrella term online chat, since it is also text-based, bi-directionally exchanged, and happens in real-time. IM is distinct from chat in that IM is based on clients that facilitate connections between specified known users (often using a contact list, buddy list, or friend list). Online 'chat' includes web-based applications that allow communication between (often directly addressed, but anonymous) users in a multi-user environment.

Benjamin Hudson McIldowie (born 1979, Birmingham, England), known professionally as Mr Hudson, is an English R&B/pop artist based in London, England. Mr Hudson is signed to rapper and producer Kanye West's G.O.O.D. Music. He has listed various influences, most notably Chet Baker, David Bowie, The Police, Andre 3000, Marvin Gaye, Phoenix, The Specials, Billie Holiday, Rosster, Ella Fitzgerald and Dizzee Rascal.

Mr Hudson initially recorded with his band under the name Mr Hudson & The Library. Their first album, Tale of Two Cities, was released in 2007. The Library were Joy Joseph (Steel Pan, backing vocals, percussion), Torville Jones (piano), Maps Huxley (AKA Robin French, bass guitar) and Andrew "Wilkie" Wilkinson (drums). They were known for their energetic live performances and were nominated for "Best Newcomer" at the 2007 UK Festival Awards.

As a solo artist, Mr Hudson has worked with acts such as Kanye West, Dizzee Rascal, N-Dubz, KiD CuDi, Tinie Tempah, Jay-Z, Big Sean and Caspa, and also toured with Calvin Harris. His vocal performances have been compared to those of Sting. He is now accompanied by Joy Joseph (vocals and steel drum), Rob Barron (electric keyboard), Raphael Mann (bass guitar) and Andrew "Wilkie" Wilkinson (electric drums).