Hey, thanks for telling me! It really helps to have someone someone so good at finding bugs!
I've already updated the word-count algorithm for the next update (V3.6). It should fix the problem with the tilde and hyphen. So now words separated by hyphens will count as one word (like "girl-friend", for example)
I'm working on still_life's suggestion, too. So that should be done in V3.6.
The main thing I'm focusing on is using something called IndexedDB to store the background images (instead of localStorage). This means that there will no longer be a size limit on the background images using the file-select method.
The reason that matters is because V3.6 will have OS-specific versions along with the .html file. This way you can have a stand-alone desktop application. (This also solves the bug where WriteRush .html files might use the same storage. Yay!) Although, the standalone versions don't allow you to manipulate the "assets" folder.
As for the words with accents, I'll have to update the word count algorithm further to fix it. That also happens for all non-ASCII characters. So people typing in Chinese, for example, would have a word count of 0. (键盘 this currently doesn't count as a word, so I have to change that.)
Thanks again!