Lobsters is a computing-focused community centered around link aggregation and discussion. The code is open source, so I had a look at how the front page algorithm works. This is it: $$\textbf{hotness} = -1 \times (\text{base} + \text{order} \times \text{sign} + \text{age})$$ $$\text{hotness} \downarrow \implies \text{rank}