No, not at all. I honestly like I am about 90% of the time - a lot of people probably do. The other 10% of the time, it's certainly not your posts I cringe over.
Don't let it affect your confidence, man, you don't need Spam to validate you, and you don't need to feel awkward. Over time, you'll just come to fit in and find your place - hell, I sure did, and I'm a thoroughly cringe-worthy and awkward human being even now, never even mind when I joined up!