Heh I know your type Riva, as you yourself do. ENTP.
'Consciousness is not simply a sensory-perceptual affair, a matter of mental imagery, as the contents of our mind would have us believe. It is deeply enmeshed with the brain mechanisms that automatically promote action readiness' - Jaak Panksepp
Well, I guess Ne bounciness along with Fe vibrance would have to fit in there somewhere, and you don't really seem obsessed with analysis enough for INTP, so you may very well be either an ENTP, ESFJ or ISFJ (and I used to think you might be NFJ, but nobody else including yourself seem to see you as being Ni, so I must have been off on that one; I just went with your thoughtful and agreeable vibe).
I usually don't appeal to these functional arguments and say how your opposite type has the same functions and such, but since you've jumped all over the place with your type, even more so than I have (hey, at least mine was in the INTP>ISTP>INTJ>ENTP range), looking at types that far distant as ENTPs and SFJs may not be that big of a stretch.
Are you more into service with a smile on (SFJ), or are you more of a radical craziness generator (ENTP)?
Lastly, I don't think you're Sx last. You are way too connective. I see you as so/sx.
I gave this responce good thought @AffirmitiveAnxiety, so give some good input back if you're up to it.
Poimandres: You seem more ENTP or N-dom like on here but more INTP or T-dom like when in more of a conversation mode (Ventrilo). INTP seems to fit well overall but..... well nevermind let's just go with that or you'll be changing your type another 500 times over the next year :P
Wheelchairdoug: Some Si type perhaps? I've gotten that vibe from you for a while. Some ISxx of sorts
I wouldn't have had much basis for an opinion earlier, but I have run across more of your posts lately, and they do seem consistent with INTP. (Great avatar as well.)
I've been called a criminal, a terrorist, and a threat to the known universe. But everything you were told is a lie. The truth is, they've taken our freedom, our home, and our future. The time has come for all humanity to take a stand...