These riddles aren't working. If you give us just the first line or two, it could be anything so there's no point anyone guessing (unless they're extremely bored). I like riddles that seem more 'impossible'.
Hmm, yeah, I posted trying to please you. But now that I've failed, I don't know how I will continue. (sarcasm) how does a riddle "not work?" if your not bored, and you have something important to do, why are you trying to answer riddles? is it a part of some research your conducting? maybe it's not the riddle that's doesn't work but it's....(figure it out)
I think they don't work that well because there are so many possible answers (probably because we haven't ever gotten to the final clue when you dole them out like that)