Not to offend dschiptsov, but (ab)using them is an awful habit to have.
But the colon combination is a bit awkward for adding quick smileys (SHIFT+6) which makes it understandable that one would use )) instead.
A bit unrelated, but I once had a guy trying to scam me on Steam using some neat chat request trick using a friends name. Disregarding all the other scamming signs I easily spotted this being another user because of the )) overuse. I know it is silly, but I can't help but chuckle a little bit when I see )) or similar.
Tipzntrix: hi Tipzntrix: )
The closing paren is supposed to be attached to the colon to make a super quick happy face.
or sad face.
Tipzntrix: (
(at least where I came from, EE girls are very rare)
But they do type smiles properly.
I would assume EE types would have other problems with typyjng, or maybe not;