I am a maniac when it comes to spelling, in any which way it presents itself to me in my daily routines - emails, messageboards, blogging, texting, everything. That said, the occasional mistake will slip through, simply because it's not my mother tongue, but as soon as I see it (rereading my email, skimming over my posts here) I will not hesitate to use the edit-button, to get that bothersome mistake out of there.
However, to say that I deem people who make many spelling errors less intelligent would be a bit steep, in my opinion. I'm gonna do something right now that might turn 'round on me and bite me on the ass, but I don't care - I'm gonna name names here. Or a name -singular- to be exact.
Take SillyWabbit. He freely admits to having trouble with grammar and spelling, which, to be honest, is quite apparent when reading his posts. Does that make him a less intelligent person - hell no! I feel like I've gotten to know him over the years we've both been here on these boards, and it's safe to say that Martin (Wabbit) is an intelligent person. Very intelligent even. This is underlined by the fact that, on his blog, Wabbit writes in flawless English. When he gives himself some time to write, he writes perfectly.
And that's the entire point I'm trying to make. I feel like I have to say some more, but I simply don't know what. So I won't.
Cheers