It is hard to make a site search engine friendly. Basically, a good SEO will make your website search engine friendly. Optimization your site from start is a best way to make your web site search engine friendly. This involves changing the html code and content of your site. So search engine crawler can easily determine what you site is about. Keyword and Meta tags are also important for robot to get information about site correct and quickly. After it link building and submission to major search engine is a best way to improve rank of your site.

For getting high ranking, following points are important:
Onsite Optimization

Meta-Tags- Meta tags are the html coding of the site that describe information about the site. When search engine crawler come it easily and quickly get information about the site. It contains title, description, and keyword tags. Other then title tag information in the head area of the webpage is not seen by those viewing the in browser.

Keywords- keywords are phrases or words that allow search engine to find your site. Search engine user types the keyword into the search box, because that's what you're looking for and the results are what you expect. So choose popular keywords that will bring more traffic to your site. You should select your domain name which contain keyword that you know is a popular search term for target visitors. You should use right keywords in body content. It can improve your search engine rank ability. Website keywords are the words that user will use to search for your product.
Site Navigation- It makes site easier to read when visitors find your site. it also make easy for search engine to find navigate your site.
Read more about Search engine onsite/offsite optimization.

Aftervote is a really different tool, and I'm not sure too many people would think of it as an SEO tool. It is, in fact, a meta search engine that combines the results of Google, Yahoo and MSN, along with some other factors to provide its own original results. So you can see at a glance which sites are doing well for a given search term across all three engines. It also features a number of performance indicators, including Google PageRank, Alexa ranking, Compete page strength, and a link to see the WhoIs data. You can also add a whole slew of plugins, including Netcraft reports and submission links for Digg and other social bookmarking websites. In short, this is a great all-in-one tool for sizing up the competition for an individual search term or for finding joint venture or link partners of value. One of the handy features is that you can see the Alexa ratings for some of your top competitors at once, so you can better judge the value of your own Alexa rating.Check this tool at: http://younanimous.com/

In my way of thinking, search engine optimization is just one way to help market a company's products and/or services. Certainly, some folks are more concerned with branding implications. Generally speaking, however, people get into search engine optimization because they want to make more money by marketing themselves where people are actively searching.

Search engine marketing is, in my mind, the most cost-effective form of marketing. Where else can you position yourself in a place where people are actively searching for your products and services? This type of "pull" marketing strategy is great because it's noninvasive and is highly relevant for the user, as opposed to radio or television advertising. It's been my experience that organic search engine optimization delivers even more value in that you're not paying for each and every click and not having to compete on a daily basis with the bidding whims of others in your Industry.
Different Measures of Success.

One must drive traffic. The other must communicate brand experience. Both are essential, yet employ very different techniques and ideas. How can design and SEO live together in harmony?

The Design Side

Designers create Web sites with the audience in mind. Too often they believe a user's experience dictates success. A simple "build it and they will come" mindset pervades their approach to site design. That's not all bad.

At a very basic level, creative teams long to tell a story. Through design and copy, the team takes a brand and crafts a world for it. They instill a Web site with a look and theme; a feel and flavor. Often, the most effective way to convey a message is through more expressive technologies like Flash, AJAX, and Silverlight. Even video integration has become more prevalent with increased broadband penetration.

Designers want to make use of these technologies because they engage the user. Technological integration helps tell the brand story and bring design to life. If Flash or Silverlight will make the overall site experience more enticing and interactive, then designers should implement them accordingly.

The SEO Side

If a designer tells a story, then the search engineer provides directions to the lecture hall where it's told. The SEO side focuses heavily on traffic and visibility, believing a Web site must be seen to be heard.

Now here's a surprise. Remember those cool technologies the creative team wants to use? Well, SEO wants to use them too. They're just more cautious.

While an SEO-friendly Web site doesn't need to be straight HTML, SEO teams must take into consideration search engine spiders. Even if a site uses AJAX, key content must be accessible to spiders for indexing.

This is where the two teams lock horns. When creative says Flash, SEO counters with CSS. When creative wants rollover navigation, SEO wants text-based. So what's more important: the experience or the traffic? Which side is right?