Using reciprocal link exchange directory can help get quality relevant links quickly.  With higher ranking back links search crawlers will find and index web pages faster.  

A links is an HTML link defined using the anchor tag '<a>' from another page on the internet linking back to another page.  It is important to create back links and with accurate precision as they can determine success or failure in current page ranking algorithms.  An HTML anchor link needs to have relevant anchor text and title descriptions.  It is important to obtain links from websites that are considered authority in the relevant industry and have high page ranking on major search engines.  While any bank link will count in link popularity, not all links are equal.

They have several benefits.  Of course the obvious, to increase link popularity.  If placed on highly visible high ranking pages that is also a prime benefit for getting web traffic.  Find web pages to place back links on that will provide exposure to the human eye as well as the search engine crawlers.

The most simple method of creating links is to select the SEO keyword and search the word on any major search engine.  Begin by reviewing each of the Top 10 or Top 20 pages returned from the search result.  Firstly, research the page ranking from the potential back link page.  If that page has relevant content and a good ranking, scan the page for a potential area on the page that a back link can be placed.  Ideally the position of the link should offer good exposure for even web surfers.  Repeat this process weekly or monthly.  Free back links do not always provide the best quality for increasing link popularity.

It can take anywhere from one week to a month or longer for find links to help improve page rank and link popularity.  One of the reasons for this is before those pages where your link is placed on need to be crawled and re-indexed by the major internet directories.  After they are re-indexed, some link popularity will begin to increase immediately.  Some link popularity ranking such as Alexa and Google update less frequently than All The Web or Altavista and Yahoo.  All link popularity measure links differently and will exclude some where others will include all links.