This isn't grammar, but spelling. On book forums, so many people type "heroin" instead of "heroine." That one little "e" makes a world of difference so please spell correctly!
Might someone with an obsessive passion for chick-lit -- spending so much time reading it, as to threaten their everyday life's becoming unmanageable -- be appropriately called a "heroine addict"?
I don't know how to multi-quote on this board; so rather than making a zillion separate posts, will henceforth resort to "manual quoting".
Will confess that I tend toward tolerance as regards these matters; there are ways in which I too, abuse the language, and I feel that essentially there are worse evils in the world than this stuff.
Harriet, post #30, mentions the "it's / its" thing. While understanding this one, and using it rightly; I can see why people (some of them very intelligent in most respects) get it wrong. Their thoughts: apostrophe plus s is used to denote possession -- so, drat it, "it's" SHOULD mean "of it" !
SoCalVal (post #42), starry diadem (post #45) and Mikayla (post #51), discuss "their" as the gender-neutral single possessive. I use "their" for the purpose -- being male, not wishing to risk slighting the opposite sex by universal use of the male form; and (JMO) "his / her" or "his or her" sound and look infuriatingly cumbersome and stilted, in comparison with "their".