In affiliate programs, sites that send you traffic and visitors, have to be paid on the basis of per click or other parameters (such as number of pages visited on your site, duration spent, transactions etc).

Most common contractual understanding revolves around payment per click or click throughs. Affiliates use tracking software that monitors such clicks using a redirection measurement system.

The validity of affiliate programs in boosting your link analysis is doubtful. Nevertheless, it is felt that it does not actually do any harm. It does provide you visitors, and that is important.

In the case of some search engines re-directs may even count in favor of your link analysis. Use affiliate programs, but this is not a major strategy for optimization.

Several pages in e-commerce and other functional sites are generated dynamically and have "?" or "&" sign in their dynamic URLs. These signs separate the CGI variables. While Google will crawl these pages, many other engines will not. One inconvenient solution is to develop static equivalent of the dynamic pages and have them on your site.

Another way to avoid such dynamic URLs is to rewrite these URLs using a syntax that is accepted by the crawler and also understood as equivalent to the dynamic URL by the application server. The Amazon site shows dynamic URLs in such syntax. If you are using Apache web server, you can use Apache rewrite rules to enable this conversion.

One good tip is that you should prepare a crawler page (or pages) and submit this to the search engines. This page should have no text or content except for links to all the important pages that you wished to be crawled.

When the spider reaches this page it would crawl to all the links and would suck all the desired pages into its index. You can also break up the main crawler page into several smaller pages if the size becomes too large. The crawler shall not reject smaller pages, whereas larger pages may get bypassed if the crawler finds them too slow to be spidered.

You do not have to be concerned that the result may throw up this "sitemap" page and would disappoint the visitor. This will not happen, as the "site-map" has no searchable content and will not get included in the results, rather all other pages would. We found the site wired.com had published hierarchical sets of crawler pages. The first crawler page lists all the category headlines, these links lead to a set of links with all story headlines, which in turn lead to the news stories.