Reporting people for booting is utterly pointless and goes completely against the guidelines set forth by Fizzer.
From Fizzer:
Booting players is not against the rules, and you should not report players for booting. Instead, if you're having trouble completing your turn before the boot time expires, please create or join games with higher boot times that you're comfortable with.
Using the report function in such a way weakens the value of that feature, clogging his inbox with garbage and making it harder to identify the real cases which require discipline.