In another category but in similar place: 'Makes me smile' 'Can make me laugh' If I had a penny for every time...
Men's health asserted in 2000 that if you could get a woman to laugh, you could get a woman to sleep with you. Not that there's a direct line between A and B, but sharing humor is sharing intimacy and the ability to connect well enough to disarm someone to laughter is a useful ability when flirting and establishing romance. No one wants to be intimate with someone they can't be at ease with.
I have no doubt of the validity of that. Perhaps it's just the scope of my looking glass, but such a general statement seen from profile to profile... I thought that'd be a given. In fact, I'd be surprised if/how any genuine intimacy could ensue without humor, laughter, what say you. I can relate to seeing a lack of variation with online profiles...