LETTER: H

You're crushing this search, we're so impressed, 
I gotta say, I might be a little stressed.

We have no fear, for one clue remains,
You think you can do it? You think you got the brains?

Then head on over to the link below,
See if you got this and what you can show. 

CLICK ME!!

Hint: If you know the word already, you can enter it! Otherwise, the last letter is hidden somewhere on the page.