5. Keyword density. Each search engine has its own preference as to how many times a keyword phrase appears on page in order to signify relevance of that keyword phrase (in other words, in order to help search engine understand what page is about). Around 5 to 8 per cent is a rough guide as to optimal level. Don't overdo it, otherwise it will be seen as spam or keyword-stuffing. Also use your keywords in headings tags H1 and H2. There is an H3 tag as well, but it is doubtful whether search engines bother with that, as it is perceived as less prominent on page, therefore less relevant to what page is about.

6. Don't forget good linking in your website marketing. Search engines will judge importance of your web pages to some extent on number and quality of incoming links from other sites. Ask other webmasters with sites on similar themes to yours for a link, in exchange for a link back. These sites should not be in competition with yours, but should be similarly themed. You may occasionally be asked by other webmasters if they can link to your site. If this is so then have a look at their site; make sure that their site is relevant, that it has at least some Page Rank, and that it just "feels" good, and has no nasty surprises like redirects or unexpected popups. You don't want to be associated with a "bad neighborhood"!

7. Make sure that important keywords are included in anchor text within inbound links from other sites. This is crucial to search engines when they try to figure out relevance and importance of your pages. The inbound link from other site should take form of something like this (I'm using normal brackets instead of angle brackets so as not to use compromising html): (A href="http://www.Yoursite.com" rel="nofollow")your important keywords included here(/A). You should definitely avoid something like (A href="http://www.Yoursite.com" rel="nofollow")click here(/A), which tells search engines nothing except that your site is about "click here". Be careful!

5. Find out who links to top ranked pages for your keywords. Many of their links will not be topic specific, but many WILL be. Try to get links from related ones. A page is related when it has your keywords in its title, text etc.

6. Form a link exchange ring with some of your competitors. That's a brutally effective strategy. Basically, you link to your competitors from your main optimized page (usually home page) and they link to you from their most optimized page! Such rings can dominate top positions and will be very difficult to outrank (it is difficult to get that amount of topic specific links). The caveat here is that link exchange is on main page and is not buried somewhere deep.

One more very important tip.

Increase relevancy of page that links to you by using your keywords in anchor text and description of your site! Yes, having keywords in links pointing to your page increase your rankings not only by associating keywords with your page but also by increasing relevancy of page that gives you link! That's reason SEOs think anchor text is most important factor. It is NOT. You can get a monstrous ranking boost from a link that does not use your keywords in anchor text provided that page has high PageRank and is optimized for your keywords (an example would be a DMOZ listing).

What about getting unrelated links?

Let's say you buy a high PR unrelated link. The page that links to you does not have your keywords in title and text. The only factor that makes link relevant to your keywords is anchor text to your site and your description. You'll still get some benefit but that's nothing compared to a link from an optimized for your keywords page.

Your site can't get into Google's top 1000 results?

If your site lacks Topic Specific Links, it may get filtered out from results even if it has a good amount of PageRank (from non-related or affiliated sites). You need some threshold amount of Topic Specific Link Popularity to get into top 1000 pages for very competitive keywords.

Two Final Points

1. Only one link per site can give you a Topic Specific ranking boost. Look for a link from most optimized for your keywords page.

2. If you find a page that ranks well for your keywords, go for link EVEN if that page has a lot of links on it.

To recap: more optimized a page is for your keywords (measured by PageRank and keywords found on-page and off-page) more Topic Specific Link Popularity Boost you will get from a link.

Topic Specific Link Popularity is and will be key for top rankings. Anchor text plays a major role but it is not THE factor. PageRank is still very important especially PageRank of pages that link to you.

Hristo Hristov, owner of the Search Engine Optimization Guide