Myneral

First of all, you need to know what type of ads that you would like to add into your site to get money from it. There are few types of campaign, among them are:

• CPC (Cost  Per Click) You'll get paid whenever your visitors click on the ads published on your niche

• CPM (Cost Per Thousand Impression) You'll get paid when your ads are viewed by your visitors. CPA

• (Cost Per Action) You'll get paid when your visitors buy any product from your published ads. CPL

• (Cost Per Lead) You'll get paid when your visitors sign up for any offer from your published ads. 

Secondly, you should choose what types of ads that you would like to publish on your niche. There are few type of ads format that is popular. Among them are:

• 728x90 (Leaderboard)

• 468x60 (Standart banner)

• 234x60 (Half-banner)

• 125x125 (Normally used to publish ads in blogs)

• 130x900 (Standart SkyCrapper)

• 330x400 (Rectangular Ad Box)

• Full Page Ads (Timely ads)

• Layer Ads (Ads that pasted on your screen)

• PopUp/PopUnder (A new window ads, opened when visitors come/left from your sites)

And finally, you need an advertising agency to help you finding advertisers. Its easy to publish ads from advertising agency, all you need to have is a nicely made niche. There are many popular advertising agency out there. Among them are:

• Adsense A very popular advertising agency

• Yahoo Publisher Network (YPN) The most competitive advertising agency to adsense

• BidVertiser The alternative advertising agency for those who can't work with Adsense or YPN

• Adbrite A great place to choose many types of ads format and good paying ads

• Chitika

• ShoppingAds

• WidgetBucks

• DoubleClick

• ValueClick

• CPXInteractive

• many more