Title tags should be associated with every text link. Title tags are a 508 accessibility attribute, that means that programs that make webpages accessible to blind people use the title tag to help the blind person understand what the link leads to. For this reason, title tags are supposed to be descriptive and provide a concise explanation of what the target page is about. Because of this search engines take the title tag into consideration as an indicator of what words and phrases the target page is about. This makes is a great element to use for SEO purposes.
When you scroll over a text link that has a title tag, after a moment a little box will show up and display the title tag text.
The proper format for a text link consists of 3 elements: The URL of the target page (the href), the title tag, and the anchor text. The syntax for a properly formatted text link is:
<a href=”URL” title=”Title Text”>Anchor Text</a>
It is typically recommended that both the title tag and the anchor text should be a match for the keywords that you want the target page to rank for.