You guys kinda missed the point on the ClassName issue though. He didn't say to never use IsA. IsA is to be used only when dealing with inheritance, as part:IsA("Part") equals part.ClassName=="Part". I will only agree its up to choice because the performance difference is merely 5%.
Pretty much tried to get the shortest username on my new account that made sense and didn't have numbers or capital letters and ended up with the name "tukars" which is surprising to me because phonetically you say "two cars" and it was completely unintentional. (new account), for my old account "abnotaddable" (this one) i just did the first two letters of the alphabet followed by not and then a random word.
If the answer is simple enough to answer in a comment, I don't think there's any problem with leaving a quick comment. As an example, if someone's entire problem was that they misspelled "workspace", I think leaving a comment to inform them would suffice.