This is kinda my way of explaining it and it may not be reliable but:
Algorithm is the way a community embraces you. Being high on the algorithm, could mean you were well known and popular, being low on the algorithm could mean your rarely recognized. This is just my way of explaining it, I’m an online server host and I’m sometimes like.. “YAYYYAYAYAYA!!!” My servers doing so great on the ____ algorithm today!!! YIPPEE! 
Hope this helps :P
