IACTalks: an on-line archive of astronomy-related seminars - Johan H. Knapen; Jorge Andres Pérez Prieto; Tariq Shahbaz; Anna Ferré-Mateu; Nicola Caon; Cristina Ramos Almeida; Brandon Tingley; Valentina Luridiana; Inés Flores-Cacho; Orlagh Creevey; Arturo Manchado Torres; Ignacio Trujillo; et al. (CoRR, 2012)