You can't trademark a letter. Trademarks are extremely narrow and are only meant to apply in circumstances where one organization's symbol could be confused for another. In general I am very anti-intellectual-property, but trademarks are okay in my book. They are basically for consumer protection.

It is context sensitive

@pruwybn @storksforlegs In the future, everytime you use the letter X, even to text, you will be charged a fee of x amount of cents based on your income.

Eh. If I start my X Laundromat business, Microsoft won't come after me.

@pruwybn @storksforlegs
Because *money*