In one university's application system, personal statement section: "Please do not use quotation marks (" "), or ampersands (&), as these can cause problems with coding and cause your application file to become corrupted."
To be fair, they threw me an error message for using an en-dash in a text field, claiming it was a "non-English character".
And "skype" wasn't capitalised, though it wasn't used as a verb.