Google Cache Why You May Want To Avoid It
Sites will take extraordinary steps to get every possible page into Google to enhance their page rank. In the case of the Google cache, this tactic can sometimes come back to haunt sites, particularly sites selling products.
Google Cache
Google copies everything it can get its dirty little spider robot on. Google stores these copies in a cache. The cache is simply a copy of all previous web pages for the link in question. If you search for something on Google, each result returned for the search has a cached button at the end of the link. Click the cached link and you will see previous copy of the page. Often, what you see is an older version of the page.
If you sell products on your site, do you really want Google copying old pages and making them available? Put another way, do you really want customers to see the old prices of the products you are selling? Many sites change prices or information during the year as a reflection of selling cycles, etc. If your prices are at their high point in September, do you want customers clicking the cache link and seeing lower prices listed from July? Probably...