Keyword Use in Title Tag

The most supreme position to put your Keywords into. Put your keyphrases in your title tag, and remember to optimize each page individually (Ex.. don't overstuff your title tag, and have numerous title tags for each page that reflect the content of that particular page - otherwise, you may thrill from a duplicative content exclusion and acquire yourself in the supplemental results).

Keyword Use in Body Text

Duh. If your keyword or keyphrase isn't make reference toed at least once in the body text of the web page, then it does not seem your page is very suitable to that keyphrase, now does it? But don't get all caught up in the keyphrase density myth - there is no magic number of times it should be present at. Transform sense to readers, and it will appoint value to the search engines.

Relationship of Body Text Content to Keywords (Topic Analysis)

Google is smarter than you give them credit so that, and just stuffing a keyphrase into a completely unrelated page won't do you much, if any pleasant. Your page should be on a topic which is semantically related to the keyphrase which you are targeting in your title tag.

Keyword Use in H1 Tag

Oh, for years the naysayers have been telling me that H1 tag keyphrase use meant nothing and that I was an idiot for thinking otherwise. Well the verdict is in and this is the fourth most important ingredient according to the SEOMoz article. At this point, therefore, we have literate to put your key phrase in your title tag, contain it in your body text, which body text is topically or semantically related to the keyphrase, and head up the body text with an H1 containing the keyphrase.

Keyword Use in Domain Name

This is one that I dispute with. I have seen absolutely no clue of this at all. Do a simple search on the internet for absolutely any search term, and chances are the top results do not have the search query in the domain name. I suspect this may have minor leverage, but don't go and change your domain cause of it. Seriously, you have a lot more to lose (such as age of domain, inbound linkage, site reputation, etc.) I regularly discover clients at the top of Google with domain names containing nothing near the suited search terms.

Keyword Use in Page URL

This is what I have called "descriptive file naming" since a number of years. I think it is of some worthiness, again, however, is more of a ingredient when setting up a new domain than would be for an existing domain with high pagerank and inbound linkage. Changing your internal url's for the sole purpose of meeting this criterion again is very risky, since the same reasons bring to attentioned above.

Keyword Use in H2, H3, H... Tags

Correctly if it works so that H1, why not so that H2, H3, H4, H5 ?

Keyword Use in ALT Attributes and Image Titles

SEOMoz incorrectly calls them an ALT tag, but it is not a tag, the ALT is an attribute of the IMG tag. Semantics laterally, I suppose this to be tremendously critical, I would have ranked this above the URL and domain name content. Experience has shown me that image optimization (image file name, alt attribute, and title) is a extraordinary way to become a page more proper to a desired search query.

Keyword Use in Bold - Strong Tags

I always use this methodology, as effectively as keyword use within the EM (italics) tag. I believe this to be a moderately meaningful aspect as it helps emphasize to Google what your page is about, and what you consider superior. Rigorously on my short list of things to do so that "on page" search engine optimization.

Keyword Use in Meta Description Tag

Again, one of my "big four" so that on page optimization. The "big 4" being: title tag, meta description, H1, and image ALT attributes. I don't refer to body text in my big four as I have confidence in that is primitive self evident. Literally valuable, and again, each page should have custom title and meta description tags.