When visiting the http://www.memrise.com/science/ page, under the sections of Elaborate Encoding, Choreographed testing and Scheduled Reminders the More about buttons/links don’t work.
I’ve tried clicking them as mentioned above using Opera, Chrome and Firefox and they all seem not to work. I’ve tried both with and without my VPN for each browser too just to see if that mattered.
Realise it isn’t the biggest “bug” but figured it was worth a mention.
Cheers!