Preaching to people who already believe the same thing.
homogenous and homogeneous are now used interchangeably
http://grammarist.com/usage/homogenous-homogeneous/
Most grammarians believe "alright" is not a word. You should always use "all right".
http://www.quickanddirtytips.com/education/grammar/all-right-versus-alright?page=1
Argument that "goodnight" is wrong and "good night" is correct: https://jasondrexler.wordpress.com/2012/03/26/say-good-night-to-goodnight/
Example: take it easy, sleep tight, burn bright
http://en.wikipedia.org/wiki/Flat_adverb
"Meantime" seems preferable to "mean time". "Mean time" is an astronomical term used in cases like Greenwich Mean Time
See http://web.ku.edu/~edit/whom.html. Who acts like a subject. Whom acts like an object.
Who is that masked man?
The men, four of whom are ill, were indicted for fraud.
Use he/him as a substitute for who/whom as a simple test.
Full expression: if the worst comes to the worst
http://english.stackexchange.com/questions/9141/worse-comes-to-worst-or-worst-comes-to-worst