Thomas Poell researched the influence of social media on the 2010 protests of the Toronto G20 summit. In the article, he focused on identifying how each social media site was used independently, and then how they were integrated together. The sites analyzed were Twitter, YouTube, Flickr, Facebook, and an open publishing website. What he found is that each site is used differently for social media activism. While this kind of activism was originally looked at as a way to promote causes and encourage long term focus on the issues, Poell found that sites like Twitter and Facebook tend to do the opposite. Posts center around photographs and videos of action during protests and rallies, not on the issues that are being protested. This would be an example of hot media, because the user can scroll through photos or watch videos without being otherwise engaged, instead of cool media where the user has to be more involved. Additionally, because activists are using sites they do not own, the social media platform actually has more control over the information being posted. For example, Twitter no longer allows unrestricted access to all posts made with a certain hashtag after a period of time. This seems to mean that the issue being highlighted fades over time.