Grammar

I know I can be a bit picky about whatever I hear, but I'm only trying to spread awareness of grammatical errors. The following is a list of bits of which I wish to remind people:
*All right must be two words, all right? Because saying it as a seven-letter word is all wrong.
*Prepositions at the end of sentences are unnecessary in sentences beginning with "where" unless you're using "from." Unless you're from the South, try not to throw in an "at."
*Lie is to lay as rise is to raise. Same thing with sit and set.
*AT what time did you read this? At (see clock). You could also say "WHEN" if the need arises.

There may be more later.