>>81
Yeah. Just as in English, you can represent a laugh many ways.

hahaha = ははは　・　はっはっはっ
hehehe = へへへ　・　へっへっへっ
hohoho = ほほほ　・　ほっほっほっ
smile = にこにこ　・　ニコニコ
laugh = 笑　・　わらい
lolololol = ｗｗｗｗ

and a lot more.