On April 30th 2015, Facebook killed support for 3rd Party applications, like Pidgin, forcing people to make a decision between either giving up and accepting Facebook's lock-in web-client with no ability to use a desktop client of any kind or stop using Facebook Chat altogether. I chose the latter and switched to Telegram.
Facebook has decided to require SSL certificates (https://) for all iFrame Facebook Apps as of October 1st, 2011. This decision has been met with mixed reactions and even I'm conflicted with what I think about it. On one hand, I agree with it because having a secure connection over non-secure will certainly help the casual users that use Facebook and have no need to know what it even is. On the other hand, I don't like it because it then requires people who make Facebook Apps for clients like I do to have SSL Certificates for each client/app. That would be a VERY BIG hassle to deal with especially on websites that have absolutely zero need for SSL, like this site which doesn't collect anything from its visitors.