Here be one!:
One is a key, but not in the good way;
One shares a humorous story while lisping;
One is not slow, nor does his voice echo;
One does not know whether to bounce or fly;
One barely the highest;
One beautifully Italian;
All are scattered, yet all united.
What they be?
Sounds like the members of AFF - a well-constructed riddle! 
BUT you are still wrong - I is not a word! Or the answer - in the middle or centre of what?
Is too! *grins*
And a lower case "i" is in the phrase "the middle" - the second letter of the second word, to be exact... I'll have to keep looking for the second answer, but I still think that "I" fits...
And as to my riddle, yeppers, that's correct! Bonus points for working out everyone mentioned...
One is a key, but not in the good way; earthmonkey?
One shares a humorous story while lisping; Sarahjoke
One is not slow, nor does his voice echo; quickduck
One does not know whether to bounce or fly; Me! 
One barely the highest; Max the Bear
One beautifully Italian; Bella
And hint for mine: it is a word of four letters that describes the middle of something!

Your riddle is tricky, but I shall guess the word:
noon NOON ?...??...????
( really, I don't know)

Perfect! you are an official genius! Your turn... 
One shares a humorous story while lisping; Sarahjoke
One is not slow, nor does his voice echo; quickduck
One does not know whether to bounce or fly; Me!

One barely the highest; Max the Bear
One beautifully Italian; Bella
And hint for mine: it is a word of four letters that describes the middle of something!
Yay! All but the top one! *grins* I'll leave it for a little while, because I'm pretty sure you'll get it...
As to yours, I'm still stumped for now - shall have to do some deep pondering...
I'm a complete idiot! 

Evil Zakk-key! Duh....

here goes-very short and simple:
What can fill a room but takes up no space?
*EvilZakkie your riddle was very good-and original!
Is it silence?
(I got the idea because I just came back from a drive up our local mountain, and the catarrh means my ears are not popping - I'm nearly deaf!)
but not the one I have....

Noise?

that was fun
Now it is your turn!
*grins* Oh yeah - I forgot about that part of it...
Aha! Found one!
Think of words ending in -GRY. Angry and hungry are two of them. There are only three words in the English language. What is the third word? The word is something that everyone uses every day. If you have listened carefully, I have already told you what it is.
You cannot repeat a riddle I put in here earlier - think again!
I can run but not walk. Wherever I go, thought follows close behind. What am I?
A nose?
btw you are forgiven - it is the kind of mistake I make all the time! 
a secret ?
Close, but I have to keep it, not you...
a secret ?
Close, but I have to keep it, not you...
hmmmm
the "bond" of friendship ?
ooh I me getting really philosohpical here lol! 
Not quite.
It is mine, if I give it to you I have to keep it!
But I will tell, eventually. I give you my...
Ooops, not yet.

Close enough! The correct answer is my word. 
Sorry, I must be too old-fashioned for the rest of you!
Tomas - I like your sig! 
Sorry, Flardox...
I didn't mean to upset you. But pink elephants are a good answer to almost all riddles! 
keep guessing; by animal, i meant mammal
Mammals cannot fly, except for bats
. Did you know that bats make up one fifth of all mammalian species, at least!