Text and Banner Advertising 
Provides information on Google's AdSense program: how to tweak a website to improve your adsense revenue, advantages but also disadvantages.
http://www.hackadsense.info/
Describes a solution to rotate multiple banner and pop-up ads across a website. Options include hosting at bannerfiles or on user's server.
http://www.bannerfiles.com/
Offers affordable banner design services for clients and companies.
http://www.bannerperfect.com/
Professional and affordable banner ad design including eye-catching Flash banners and website Flash headers for business sites or personal home pages.
http://www.banner-ad.co.uk/