Amber Dawn MacArthur (born 27 June 1976 in Charlottetown, Prince Edward Island) is a Canadian television and netcasting personality. MacArthur is currently the co-host of BNN's App Central. She was the most followed Canadian television personality on Twitter in 2008.MacArthur also produces and co-hosts her own video podcast, called commandN, and co-hosts the TWiT podcast network's Social Hour (successor to net@night/Inside the Net).