My philosophy has always been that if you are in a forum you have the time to use the correct word and punctuation. I lost a promotion at work because I didn't have a degree. The guy that got the job knew nothing of the business and his emails/memos were unreadable. He had horrible grammar, spelling and correct usage of the problem words. They're, their, there, to,two,too, passed,past and others.
My wife is the secretary for the dept head and has to collect portions of reports from multiple people. She has decided she is going to build a template and dare anybody to change it.
My belief is that when you regularly put effort in to what you write, it will become more and more effortless when it actually matters. It really simplifies things - I never have to "switch" between writing styles dependent on who I'm talking to.
I personally do not want my posts on this (or any other forum) to make me appear lazy, uneducated, or complacent.
"We are what we repeatedly do. Excellence, then, is not an act, but a habit."