Some Muggle Born Ravenclaws heard about the website ratemyprofessor.com and were inspired. They spent long nights developing witchandwizardweighin.com. The site quickly spread across the school and ratings for each professor went live. Upperclassmen wrote detailed reviews of professors for the First Years; filled with tips and tricks to pass each class.
Professor Longbottom was overwhelmingly rated the hottest teacher.
I think the starkest illustration of the sheer senselessness of Tumblr’s design is that the status page that’s supposed to announce and explain service interruptions is hosted on the same infrastructure as the main website, so anything that causes a service interruption for the latter - including planned maintenance - also takes down the status page explaining it.