If I use <!-- google_ad_section_start --> and <!-- google_ad_section_end --> How long would it typically take before I see the ads changing. If I know the timeframe I know if it's working or not. tx
According to the Google AdSense Help on the subject, it can take up to 2 weeks to take effect. If your site gets decent traffic and gets spidered often by the AdSense bot, then it should take less than this. Cryo.
recently I have added adsense to couple of new pages... the relevant ads started showing up in the next minute. I have observer the similar thing a month back also. Relevant ads appears in a minute... Well, that was in my case.. I am not sure whether always happens like this..