Ron, I will be the first to admit that my spelling isn't always 100%, but I agree wholeheartedly with what you have written.
I have a thing about spelling, maybe even slight OCD. I'll go back and correct a spelling mistake in a post if I notice it, even weeks down the line. My wife teases me about it, we drive past a billboard or shop window advertisement with a spelling mistake and I get irate because some @#@%$^ didn't bother to proof read it!
Sure, the forum is more casual, but guys should put more effort into it. If it's a long post, type it in MS Word, F7. AMAFIXFIX, copy and paste into the forum post. Do not get me started on sms short code

are you too lazy to type the 1 extra letter! L8er or Later - wow, that must have saved you at least .23495 of a second.
Yes, I need to get a life, but on a more serious note, I placed an advertisement to fill a post we have open at the moment for a junior IT techie. If I open the attached CV and the first line has 3 spelling mistakes (including misspelling his home town!), it does not bode well for the applicant. Food for thought for anyone that's "listening".
@ Tony Z - I will never admit to it!