I think some time people get so caught up in what they're writing that they rush to post. I'm pretty sure most of us know the correct spellings of the people we're talking about. It's not ignorance, just hurried.
Correct spelling of a name is important, because it's the respectful thing to do. I am a terrible speller, so I often search for the correct spellings. But if someone has made a reasonable attempt at proper grammar and it's evident from his writing that he has a grasp of written English, I do not think his head should be bitten off for misspelling a word. I liken posting on a non-academic message board to causal speech, and how many of us speak in proper English all the time in a causal setting? If I were to correct someone's casual speech in a bitchy manner you can bet she would rip me a new one. Sometimes I politely correct the speech of my friends who are non-native English speakers, but this is because they have asked me to.
That said, I do make an effort. I type most of my posts in Word and then proofread them; however, if I miss something it does not mean I'm lazy. People should discern between those who have made an honest mistake, and those who are too lazy to make an effort.
Actually there are WAY more than two but I won't list them here. *s*
"All our dreams can come true -- if we have the courage to pursue them." -- Walt Disney
We must have different Gods. My God said "do to others what you would have them do to you". Your God seems to have said "My Way or the Highway".