In saying "Mike's and my house", you are absolutely correct.
In saying "90s" you are not. I assume you are referring to the 1990s, correct. so the proper punctuation of "nineties" should be "'90s", using an apostrophe in the place of the "19" and not between "0" and "s". But in case I'm mistaken, I'll look into it.

RE to UIP:
1. "The house of Mike and Me" is too wordy for most people to say, as correct as it is.

2. When you split up "Mike and my's house", you would be saying "Mike house and my's house", which doesn't make sense. That's the rule I follow with multiple possessives: always break it up, then put it back together.

RE to lastronin:
ROTFLMAO!!!!!

RE to myne:

That may be the case, but in thirty-two years of teaching English, surely the issue of same-sentence colon and semicolon use has come up. Besides, thirty-two years of teaching is called experience. Ethos is directly involved in the argument. Have you ever written a paper you know nothing about? Personal experience supports argument, as does research. Now, if you research a well-documented and legit source and find Louise is incorrect, good for you. If you do not, you've learned the meanings of the term "ethos" and the phrase "think before you speak".

"I am indebted to my family, especially my cousins: Jane Smith, my first teacher, without whom I would not be where I am today; and John Smith, my second teacher, who taught me more than he could have possibly imagined."

Here's what I would say to eliminate both colon and semicolon:

"I am indebted to my family, especially my cousins Jane and John Smith, my first and second teachers respectively, without whom I would not be where I am today and who have taught me more than they could possibly have imagined."

I prefer not to list for the simple fact that I hate using colons and semicolons when I'm not sure of writing rules in that particular situation.

The only problem I see with my version is that if the author wanted to indicate that John Smith taught him/her more than Jane, but that is all perspective.

Yes, Miranda, your capitalization is ...capital, lol. Northern begins the sentence and southern doesn't.

Capitalize directions when you are referring to a region as a title for the region and not the direction:

1. I am going south for winter.

2. The South lost the war.

3. The weather is beautiful in southern France.

Dos and Don'ts

The "Kids" might be plural, but it is part of the initials for something that is singular.

"HFK's" to describe possession of the activities
"HFK" to describe the activities

When I first read this, I thought, "why even have bullets?" Then I saw that the three items did, in fact, require different types of flour. The way I would do it is as follows:

Which type of flour would you use for the following items:
1. bread

2. cake

3. cookies

But if you wanted them to end in question marks you would want it to look like this:

Which type of flour would you use to make...

1. bread?

2. cake?

3. cookies?

That is my opinion.

And why is it that Northerners can't understand the South's warmth in using incorrect words? For that matter, it's not so much incorrect as it is part of the Southern dialect. When you spell it "sleep" you make it look like they are using the wrong word altogether. When you spell it "'sleep", you show that it is a contraction of the correct word.

They's too a-sleepy for to using the right grammers. lol

Srsly, no I've never encountered that misuse, and I have lived in Northern Arkansas for ten years.