Peek (v.) is to clandestinely look at somethiing. To sneak a peek (n.).
Peak (n.) is the top of something; the apex or summit. The height.
Pique (v.) is to make someone curious about something. Interest is piqued.
Yes, it does matter. I'm not going to spend two minutes trying to figure out what you meant each time. That time adds up. No, I don't know what you mean. I have to figure it out. If you spelled right, and GODDAMNED FUCKING PUNCTUATED ONCE OR TWICE I would know what you meant, instead of having to make inferences. If you make mistakes from time to time, that's okay. But don't be cavalier about it, cause that gets my anal retention up.
What you want to post in your own journal is fine; don't expect me to read it, though. But fer chrissakes don't post like that to a community, especially not an lj_ community. That is NOT your private journal where you are just jotting down thoughts for yourself.
Lecture's over. Your homework is to:
A) Get a dictionary. Or bookmark an online one.
B) If you have a question, fucking ask your English teacher or someone. We won't laugh, honest. Not if you actually want to learn.
C) Stay off AOL/IRC for the weekend. Read a book; anything, from Dr. Seuss to Dostoyevsky. Remind yourself how English is supposed to look (you'll need a translation of Dostoyevsky for that). Cultivate that sense of when something looks wrong, so you'll be able to proofread your own text.