I've been a tech writer for a number of years (although I'm now more or less retired from it). So I have a bit of sensitivity when it comes to spelling, grammar, punctuation, and the use and abuse of the English language. Here's a headline I saw on the The Drudge Report today:
"CELLPHONE USE LINKED TO BRAIN TUMORS... "
Really?? I doubt it. In fact, I am fairly certain that brain tumors do NOT cause people to use cellphones.
Cellphone use may or may not cause brain tumors, but I'd bet almost anything that it doesn't work the other way around. That's like saying that "wet streets cause rain".