Domain Names - How Important Are They?

Lets say hypothetically that all these domain names are available...

toysforkids.com
toys-for-kids.com
toyskids.com
toys-kids.com

Now, if we are to assume Google totally ignores words like "for", which domain name above is the most relevant if you were selling kids toys?

This is what annoys me - you could have some website called thingstodoonvacation.com and it would be considered more valuable than one called things-to-do-on-vacation.com even though the latter is instantly readable!

Then I wondered just how much does the domain name matter? I mean as a rough percentage (I know it depends what the niche is) but I mean really roughly? What sort of a percentage in terms of importance, is the name of the domain?

Also, how does Google cope with (or punish) sites that have and, if, but, where, when, for, how, why and all the countless other words that are "not keywords"?

Also, you go to register "money.com" and of course, its taken, then moneymoney.com is also taken, then moneymoneymoney.com is as well... what the hell, I mean what if you just repeat the word like that? After all you only have the one keyword there "money".

Also the G keyword tool is a bit misleading. For example you can type in "lose weight" in the tool and it will say the term "how can I lose weight" gets the same amount of results as "lose weight" does, but this is baloney! It is saying that because it does not count the words "how can I" in the search and only goes off the words "lose weight".

This means the G keyword tool is not accurate. It says there are 3,350,000 searches a month for the term "lose weight". Alright, that seems right. Then down the list we also have "lose the weight" with the SAME amount of searches! Sorry but I should think thousands and thousands of times LESS people a month search for "lose the weight" compared to just "lose weight" and yet the G keyword tool tells us its all the same?

Lets say someone has a website called "howtoloseweightinnotime.com" - as far as google is concerned, the words "how" and "to" and "in" and "no" ALL COUNT FOR NOTHING! So then this means really that the website might as well be called "loseweighttime.com" ???

That makes no sense though!

Jeez, if you add enough if's, but's, and's, to's... I am sure you can get a domain with "just keywords" so how on earth does Google rank one above the other.

For example... lets pretend a guy has had a website for 10 years called "moneyandmoney.com" and he has the top page rank for the term "money". Now some guy comes along and buys "money.com" as a new website, would it get to the top because it only has "money" as its domain name?

This is all screwed up, if anyone can answer any of this I will be surprised.

I mean if these words like if, but, how all don't count, then this surely means that regardless of what you do, if you have just the main keywords there... then you have the main keywords there!

What if I started a website called "dietanddietanddietanddietanddiet.com" it says just "diet" to Google!

Please help before this stuff drives me nuts. I am not asking anyone to post a long reply or even any reply except at least just a link to some sort of believable source (like Google themselves) or something, where this keyword stuff, or should I say non keyword stuff, is explained.

Otherwise anyone with a domain that has just the one keyword with a bunch of "how to" etc would be climbing really fast up the rankings and as we all know, this simply doesn't happen for long domain names like this. A site called "dietanddietanddietanddietanddiet.com" would never beat "diet.com" but why not? If it has just "diet" there as the sole keyword in both cases, you could even argue "dietanddietanddietanddietanddiet.com" is better because it mentions diet a lot more. :rolleyes:

Sorry this post is messy but thats what I am like.