In order to identify the correct ads in Adsense, just wonder any of you know how Adsense place the ads based on what? Keywords, title or descriptions? Any idea? Please advise. Thanks
I would say all, the domain, description, the main keywords etc. However I am not sure if its just me but the most important aspect would be the title and content. Lets say you have a blog about baby then you post a new page about mobile phone, the ads will still appear related to mobule phone based on your subdomain post and content.
AdSense is a contextual ad network, and as such, it will use the contents (all of them!) of the page & site to match to the appropriate ads.
All factor .google show ads by using site content like title ,keyword , description and site contents