But it has nothing to do with Haskell in particular... to most people, this just means greater than, lambda, equal to. This is doubly confusing, because >= usually means "greater than or equal to".
Perhaps you are right that for most people the logo is meaningless. However, I find it looks like a fusion of >>= (Haskell's binding operator) and λ (the symbol of functional programming).
Personally, my first impression is that it looks like a subway system's logo: you have arrows on the left to designate travelling, rails on the right, and the various strokes remind me of the complexity of the interconnected lines of a subway system.
I'm (usually) on my own so I don't have to explain myself (and I can handle the sight of them ;) ) but they're certainly not the norm for stuff linked from HN - this isn't 4chan - so people won't be expecting them. Pointing them out is the right thing to do.