Getting PSA's?

Common Reasons:1.The Google crawlermay not have as yet crawled all the pages of your website.It may take up to 48 hours or more,for the crawlers gather content.During this period you see may be public service ads or ads that are only slightly relevant. Nothing to worry...the relevancy will increase over time. Again the Google crawler indexes by URL and therefore considers http://site.com and http://www.site.com different URLs,and so you may notice that ads appear differently on these pages. 2.The crawler can't access your site.If his is the case.Check this out by logging into our AdSense account>Site Diagnostics.For more details on these errors and how to resolve them, visit the Site Diagnostics entry. 3.Sensitive content on your web page,may also be one of the reasons.In which case relevant paying ads will not be displayed. Google has certain filters in place to protect the advertisers from advertising on pages that could be construed as potentially negative, non-family safe or even offensive 4.Your AdSense account may have been disapproved or awaiting review.When you try to login to your Adsense account in such a case,you will get this msg "Account Not Active"," An AdSense account does not exist for this login, as it is associated with an unapproved application.In such a case check your email,for further information. If you see this>"Account Not Active: An AdSense account does not exist for this login, as your application is currently in review.,"wait for 2-3 days,for Google to send you a response. If however you are able to successfully log into your account, this reason doesn't apply to you. 5.Your site has restricted access using a robots.txt exclusion. In such a case,on pages where the crawler is unable to crawl or understand the content of a page, public service ads may be displayed, for which you will not receive any earnings. Just add the following two lines to the top of your robots.txt file,to solve this problem. User-agent: Mediapartners-Google* Disallow: This will allow the crawler to crawl the content of your site and provide you with the most relevant ads for your pages. 6.No content or not enough content.Since AdSense ads are contextual based,content is what detrmines the type of ads to be served to your site.So the absenceof content r little content may trigger PSA's.Again the crawlers,cannot derive meaning from: audio and video files,mp3 files,Images,Flash movies and Java Applets If you have to include thse in your site Google recommends you to include more content "other than the above files" on your website to assist the crawlers in gathering information about your site to display relevant ads.