A short experiment using PowToon (http://www.powtoon.com/) to summarise Eli Pariser's tips on how to avoid being in a 'filter bubble'
Pariser, E. 2011. The Filter Bubble. The Filter Bubble (available on-line: http://web.archive.org/web/20150317092532/http://www.thefilterbubble.com/10-things-you-can-do, accessed 13 August 2015).