How many times should a keyword/phrase be inserted into a page, that the page is on? I mean i cant obviously include the keyword 50 times, as SEs won't like that. whats the approx amount i should include my keyword in my keyword pages ?

For example If I have a site on pets with 4 pages,
Heres my 4 the pages
-Dogs,
-cats,
-horses,
-Tropical goldfish
Now, Page 4 on goldfish, how many times should the keyword "Tropical goldfish" be displayed on that single page ?

I mean if you Overdo it, and include it 50 times on the page, the SE's will get suspicious, so how many times should it be included ?
10, 20, 30 ? i know this number would vary per SE. but anyone know a good number of times to include a keyword on a page ?

taken from highrankings advisor

Keyword Density

When it comes to SEO copywriting, this has to be one of the most
talked-about subjects. Why? Because keywords are the very foundation
of search engine copywriting. Without keywords we wouldn't even have
SEO copywriting. Since keywords (or more accurately, keyphrases) play
such an important role in search engine copywriting, it would make
sense to have certain rules and regulations or formulas that should be
followed.

It might make sense, but I'm sorry to say the mystery... the magic...
is more like a myth.

I have a guess as to where these magic formulas come from. Someone
brags to their friend that they got a #1 ranking for a particular
keyphrase. The friend studiously looks over the site and starts
taking notes. "He used this phrase 8 times in a 500-word piece of
copy. He put the keywords here and there and over here, too. That
means you have to put keyphrases in these places and reach a keyword
density of 1.6% in order to get a #1 ranking." Not so! Let me
explain why keyword density formulas don't fly.

Copywriting Is One Piece of the Search Engine Optimization Formula

Copywriting, in my opinion and the opinions of respected search engine
optimizers, is 1/3 of the puzzle; but there are other pieces to the
puzzle, too. What about coding and linking? Those are two extremely
important factors that also come into play.

If copywriting were the sole factor, then maybe -- just maybe --
keyword density formulas might be a reality instead of a fable. But
alas... they aren't.

Keyword Density Formulas Are Unproven

Go to any search engine and type in your primary keyphrase. Look at
the results that fall into the #1 through #5 slots. Do they all have
the same keyword density? No. Some have higher levels and some have
lower levels.

If keyword density formulas were carved in stone, every single site in
the top 10 would have the same keyword saturation levels. But
alas...they don't.

All Keyphrases Aren't Created Equal

Think about the competitiveness of the various keyphrases on the
Internet. You have some like "search engine marketing" that are
exceptionally competitive. Then there are others like "sushi
restaurant in Charlotte, NC" that aren't. You have to take into
account how many other sites you'll be battling with when you write
search engine copy.

Positioning of Keyphrases

In addition to the number of times a keyphrase is used, you need to
pay attention to *where* your keyphrases are used. While it has not
been proven to my knowledge, it is strongly suspected that keyphrases
that have special formatting carry additional weight. By special
formatting I mean bold, italics, in bulleted lists, in <H> tags, etc.
As I said, this has not been proven. Again, go to your favorite
search engine and type in a keyphrase. If formatting and positioning
were a carved-in-stone rule, all the sites in the top 10 would be
using these tactics. But alas... they aren't.

Why the Myths?

I understand why people want formulas. Having hard-and-fast rules to
follow means that if you apply the formula, you know you've done the
job right and you can't fail. The problem is there isn't just one
right way to create search engine copy. There are as many ways to
write SEO copy as there are sites on the Web.

Am I holding back? Am I trying to protect my highly classified
industry copywriting secrets? Not at all. In fact, go to my copywriting site,
visit the portfolio section. If I
had a fiercely protected secret that I was holding out on, all the
sites with SEO copy in my portfolio would have the same keyword
density. But alas...they don't.

What DOES Work?

So after I've dashed your dreams, the least I can do is give you some
insight into how I write SEO copy. I don't do any or all of these in
any particular order. I don't do them all every time I write. I am
NOT saying that you should do all of these things every time you
write.

1) If possible, I try to include keyphrase(s) in the headline and
sub-headlines. If it doesn't make sense, if it sounds odd, I don't
include them.

2) When it flows, I include keyphrases roughly once or twice per
paragraph. Do I count words? Do I run keyword density ratios?
Never! I just eyeball the page to see if it looks right.

3) This I do EVERY time I write... I focus on natural language. If
the copy sounds forced after including keyphrases, I scrap it and
start over. Read your copy out loud. If it sounds stupid or
redundant to you, it will sound stupid and redundant to your site
visitor. Don't compromise the flow of natural language for the sake
of search engines. What good will #1 rankings do if as soon as
visitors get to your home page they click away because the copy is so
awful? All the #1 spots in the world won't pay your grocery bill.
You ultimately have to have sales and that means winning over your
human visitors.

4) If possible, I try to include keyphrase(s) in bold, italic,
bulleted lists, or in other text that is specially formatted. If it
doesn't make sense, if it looks funny or sounds odd, I don't include
them.

So that's it. Do you feel like you did when you were a kid and
learned there wasn't a Santa Claus or an Easter Bunny? Sorry. I
truly am. But it's for your own good. If you're going to be an
effective search engine copywriter, you have to learn the truth.
Relying on myths will only hold you back. Now pick yourself up, dust
yourself off, and get moving on that next #1-ranking page.

Just write down the content for visitors in a natural way, and you will rank well.

Originally Posted by russell

Just write down the content for visitors in a natural way, and you will rank well.

It's not as simple as that. You should write your content for visitors in a natural way and then address the many other factors involved in optimising a page. Simply writing good content might not be enough (but then again, depending on how competitive your targeted search terms are, it might be enough).

My experience is that, though keywords are important, it is actually the link text from external links that has far more weight.

Write for human beings though! Remember Google is written by humans for humans.....

Try sitemaps/statistics/page analysis for a good view of what Google sees.