Words with friends, endgame regarding blanks?

Solution 1:

So I just ended a game leaving only a blank, and my opponent played their last letter.

The end result was no lost points for me, and no gained points for my opponent. The blank, then, is indeed worth zero points at the end.

Also, i won the match - a risky stance in the high-stakes world of wwf, but everyone knows knowledge is worth the effort!