[cal2]

I appear to be the only one who thinks it looks like an "A". The loop reminds me of something an airplane would do in the air. I can see the sexual resemblance, but only if I concentrate hard enough on it, then it just goes back to being an "A".

[minimaxir]

An effective logo should have zero ambiguity whatsoever.

[gmu3]

I think the best logos aren't immediately trivially apparent like the FedEx arrow, Tostitos dip bowl, Amazon A to Z, etc.