[zwtaylor]

Likewise, I only use "Haha" for things that are truly funny. "lol" is reserved primarially to lend a degree of self-awareness to a particularly absurd or stupid statement that I say or recieve.

[Retra]

I only say 'lol' ironically.

[meowface]

Interestingly, I use 'lol' "seriously", and use 'heh' and 'hehe' ironically.