Selecting keyword phrase:
As keywords can be a good source to bring traffic to your site through search engines, it should attract targeted traffic, with customers looking specifically for your services or products? Selecting wrong keywords may not increase your traffic as much as it should. Therefore keywords having high search volume are necessary. Always while selecting keywords think if you would be a customer than with which search term you will search for the product and service you are providing. You will always win in this way. It is also very important to link to a page that has relevant content otherwise Google will view this link as possible spam or an irrelevant content.
On-site Keyword placement:
Proper keyword placement is very necessary. Putting keywords properly in the content of the site as content is king. Also keywords in title tag, Meta tag (keyword and description) , heading tag etc. is necessary.
Keywords in the URL of the site plays very major role in listing on SERPs. Linking from keywords as anchor tag to the relevant internal pages helps in Having more quality back-link to the website tells Google about the popularity of the site. Therefore quality linking (relevant and high PR link) to the site is beneficial which can be done by submitting site to various high PR directories, social bookmarking sites. Submitting unique articles to various article directories. Blog comments are also very important for increasing traffic and Google top 10 ranking. Most important thing here is the use of Anchor text for submitting URL.
Other factor that plays a role is the current PR of the site and Domain age of the site. As we know old is Gold. The website which are old or having larger domain age, are given importance in terms of Google.

While link building (placing links to the site or from the site) and most importantly, writing useful content form the foundation of top search engine rankings.

Short and Descriptive URL: If you have got a three, four or five words in your URL that can be perfectly normal. As it gets a little longer, then it starts to look a little worse. Now, our algorithms typically will just weight those words less and just not give you as much credit.

URL’s are case sensitive: Most of the people use standard lower case URL’s. It is advisable to use lower case URL because if you are using URL’s in upper case and somebody links to your post with lower case URL will not found the page.

Use keywords in URL: URL gives an idea to the reader about web content. For example, if you search in a Google about ‘Top 10 ranking’, you will get number of results with different URL’s. Some of them are less appealing to users and having very complex URL structure. Reader cannot make it out easily about the content inside the article. It is the possibility that the URL may contain the objectionable content. So it is suggested to use keywords in the URL. The results with this URL structure drives more traffic as the user tends to click those URL’s.

Advantages of keywords in static URLs
• The URLs look nicer and will likely get clicked on more often.
• The URLs will provide better anchor text if people use the URLs as the link anchor text.

Avoid rewriting Dynamic URLs
In most cases rewriting Dynamic URLs, the translation can be messy, and if not handled correctly can lead to indexing problems.

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