Really is there anything wrong with stating exactly what you're looking for and narrowing down the dating pool? There doesn't seem to be a lot of point in dating people who aren't compatible with what you're looking for. If you're vague there are going to be people who reply to you who will feel like they're being led on. What you've put in your profile and what nycindie has put in her profile are very different. Yours doesn't really say anything whereas nycindie is specific that she wants to be non-exclusive. You don't have to use the word polyamory but you should let people know what type of relationship structure you're looking for. "I'm not looking to date anyone exclusively but I do believe in forming lasting, loving relationships." is a good way to put it which doesn't mention polyamory but still isn't at all vague.
Everything will be ok in the end. If it's not ok it's not the end.