Ok, let’s have a recap!
My guess!
(your name here) asked: 8) Is it electricity?
(ynh), I like your guess, but it’s still wrong. Mua ha ha ha…
hinting at a smile guys
d12 asked: 9) *Can anyone have it? *
dwelve, do you mean like, own? Can you own it…
::ponders::
It’s sort of iffy. It’s a stretch either way, because the wording is weird. If I say yes, then a lot of people will yell at me afterwords for saying so. If I say no, then a lot of people will still yell at me afterwords for saying so. I can’t win. It’s really a toss up, but just so I won’t confuse you anymore than I all ready have, I’ll say yes. Later in the game, though, keep in mind what I just said.
Let me clarify my question:
By “physical phenomenon” I meant to ask if, since it’s not an object, it’s a reaction or occurance like electricity, blushing, or fire. I’d hoped that it’d separate these from non-physical ideals like truth, justice, the Bolivian way, etc.
(Da Tree Giver, ouch!)
Alright, I’m stopping the game right here.
This is the answer.
[sub][sup]notwithstanding that (your name here) just usurped my role as recapper, that was a[/sub][/sup] Damn Good Guess.
Well, upon preview, I come to learn that this is in fact not correct. But this just can’t be correct. I protest. Yo La Tengo, admit it – you’re just mad that we got this one so fast. Come on. You can tell us. Remember, honesty is the best policy.
Mr. Tree, hmm… I don’t think it’s anything like those, but does a phenomenon have to be naturalish? Like the aurora borealis?
And to comment on your “nickname.” Yeah, it sucks, sorry. I tried to find words that rhyme with bra, he, and sliver (I know it’s silver, but there aren’t many words that rhyme with silver). And there you have it, Da Tree Giver. Your name was hard. What’s a BraheSilver?
Anywho, you guys are giving me a headache. Also, my teacher isn’t allowing “I was at the SDMB all night” as an excuse for not finishing my homework anymore, so give me a break!
Actually, no, don’t. I like the attention. 
Hey, I’ve got mail. “Reply to post ‘20 Questions version 4.0’” Who could it be?
{post-preview}
Well well well, if it isn’t Slight Whitening. Back for more, eh? Now that I think about it, I think Light Whitening would be better, because then I would have just switched the light with the white. Oh well, it’s still slight. Now let me untie my tongue…
Huh? Oh yeah, the post. Naa… that’s not the answer, sorry. And yes, I too noticed (ynh) took your role as recapper… What do you think we should do with him? Swirly?
Ow! No! No! No more swirlies! Oww!
Ok, let’s try another of my guesses.
10) Is it any kind of energy or power?
C’mon, you gotta admit, electricity is right? That took me a while to come up with too! And where’s my nickname? I demandan apology for having no nickname!
Aww come on, you’re (ynh). It’s pronounced “yuhn”.
Want a new one? Give me a few minutes. Anywho…
(your name here) asked: 10) Is it any kind of energy or power?
(ynh), hmm… Yeah, sort of.
Jeez! Sorta this, under a certain circumstance that, up for deabate here. Make up your frocking mind! Yeah…
Ok, one last try here before I let others in:
11) Hm…it’s not radiation…not air or something along those lines…ah ha! Is it a laser?
Look @ #2
Iffy emotion… last time I looked Lasers weren’t close to emotions. It’s not material but you can own it.
Hey you never know, d12. Could be anything. Though I still think electricity is right.
I like “Mr. Tree.” That’s the kind of name that could grow on you. As part of my glorious debuting on the boards, I shall explain my name (kindly ignore that I registered the name in '99).
I point ye now to Unca Cecil for the answer. Quite a guy, that Tycho. Along with the other “qualities”, he died from either a) mercury poisoning or b) holding his bladder too long. So I’m named after an eccentric historical figure’s prosthesis. Not too shabby, I think.
From the clues given, I would have to say that it’s something like the power of influence. If you think about it, it’s a power that you would have over someone else, and while usually not visible, in the sense of the word, you can observe it. You can also own it, in that people with great amounts of wealth have a high influence (or you could go the bribery/corrupt politician route).
NOTE: This is not an official guess, but merely a suggestion for discussion among the others.
Hey, Yo La Tengo, let us in on some stuff here!
Ok, here we go.
I would like to start off by changing one of my answers. Anus asked if it was visible. I went off rambling. My new official answer is just a plan no. I thought about it all during school and realized I was a moron. My apologies to everyone.
(ynh), you are now I am a lobster. Creative, isn’t it?
And since this new information would rule out I am a lobster’s new question, I won’t count it. Your question tally is still at 10 (next question will be 11).
Also, I’m going to say it’s not a phenomenon.
Sorry sorry sorry sorry. Please don’t hurt me. 
Maybe I’ll need an associate next time to keep my mind on task.
I would just like to point out I’m in Mr. Tree’s sig.
Ok, I have no clue.
But nice thinking with my nickname.
Yowza. Let’s recap, since stuff has changed and I have to scroll up to read the latest(and I’m lazy that way):
Hmm. I’ll take one more guess this time, then go back to observing.
11) Is it faith?
Hey, good guess Mr. Tree!
That looks like it might be it.
Hehe. You guys are having a party with these nickname things.
BraheSilver asked: 11) Is it faith?
Mr. Tree, nope. Good guess, though. I like the idea, but now I can’t use it in future games because you just said it. (or can I… Mua ha ha ha )