I could understand someone at work, fielding scores of questions an hour, sorting them out into "yes, no, maybe, get back to to you" but if anyone is THAT pressed for time they should not bother to contribute IMHO.
Perhaps it is a hangover from 1p a minute dialup days? Even worse (don't see it so much now) are the "texters" !! Cn anbdy tll me wy my inface is smkin.
And I am a guilty as the next guy of the odd typo but to not take ANY care in how and what you write is just plain lazy and rude IMO ( NOT a humble one this time!).