[kaolinite]

Of course. There are differing levels of perfection, however. For example, something I despise is when, somehow, spaces are left at the end of a line by hasty colleagues, e.g:

    "someFunction();    "

Their existence doesn't damage maintainability, performance or code readability - yet to me it feels wrong and I can't stand it.

[nkuttler]

Of course it damages maintainability when moving the cursor around becomes erratic. Your colleagues should probably configure their editors properly to remove trailing whitespace.

[ams6110]

Also perhaps they should stop copy/pasting code from websites.