1. Advertising Manager

This plugin will manage and rotate your Google Adsense and other ads on your Wordpress blog. It automatically recognises many advertising networks including Google Adsense, AdBrite, Adify, AdGridWork, Adpinion, Adroll, Chitika, Commission Junction, CrispAds, OpenX, ShoppingAds, Yahoo!PN, and WidgetBucks. Unsupported ad networks can be used as well.
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2. Ozh’ Who Sees Ads

Who Sees Ads is a must have for anyone using Adsense on his blog. It is an advanced ad management plugin that lets you decide who will see your ads depending on user defined conditions. You can manage ads in your templates (eg sidebar.php) or within posts and pages.

For instance, you could consider the following criteria: Is the visitor a regular reader? Does this visitor come from a search engine? Is the visitor currently reading an old post, or something fresh?
A very good way to fight against Adsense “Smart” Pricing.
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3. AmazonSimpleAdmin

AmazonSimpleAdmin lets you easily integrate Amazon products into your WordPress posts and pages. By using the template feature, you can present the products in different styles.

The AmazonSimpleAdmin plugin work with WordPress shortcodes, which let you easily integrate it inside your blog posts, or pages.
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4. AdRotate

When you display affiliate banners, it is very nice to be able to have your ads rotating so your readers will not always see the same banner every time he’ll visit your blog.

That’s exactly what the AdRotate plugin do: Automatically rotate your ads.
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5. AFLinker – Affiliate Link Cloaker and SEO Links Redirect Manager

AFLinker is multi-functional plugin for affiliate marketing automation. It combines features of affiliate Link cloaker, SEO enhanced affiliate links generator, your own URL shortener service and redirect manager.
AFLinker converts predefined keywords within the text of your website pages into clickable clean (cloaked) links.
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6. WP125

If you’ve given up the low-paying and slightly obtrusive ad networks used by many new bloggers, in favor of selling ads directly, you may have been frustrated with the excessive time involved managing your ads. Not only do you have to find advertisers to sponsor your blog, you have to manually edit your template to put the ad in, and then head over to your favorite calendar app to set an alert to remind you when to take the ad down.

Time consuming practices like those are a thing of the past. The WP125 plugin can help you manage your ads more efficiently, leaving you with more time to write new posts. The plugin adds a new “Ads” menu to the WordPress admin, featuring submenus for tweaking display settings and adding and removing ads.
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7. iTunes Affiliate Link Maker (iTALM)

Do you link to the iTunes Store with or without an affiliate program? If you answered “yes” to the previous question, you’ll probably enjoy iTALM.

This plugin adds an itunes button to the visual editor which when clicked bring forward a jquery dialog containing a search for the iTunes store link maker.

Once you found what you were looking for, clicking on any link will ask for a title for the link and insert it into the content editor. iTALM also enables the ability to directly link to albums, something the standard link generator does not normally do.
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8. ClickBank Hop Ad

If you monetize your websites, you probably already know Clickbank, one of the worldwide leaders of affiliate marketing. Clickbank also have text ads – quite similar to Google Adsense – that you can put on your site to make some money. With this ClickBank Hop Ad plugin, you’ll be able to insert these ads simply by using the dedicated widget.
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9. DealDotCom Plugin

DealDotCom is a website that offer various products on a daily basis. They also have a quite cool affiliate program that allow you to arn up to 35% of the product price.

This plugin allow you to display the DealDotCom product of the day on your blog. Of course, with your affiliate link so you will make money.

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10. Envato Recent Items

In a short amount of time, Envato managed to become a well known company in the blogging world, due to their excellent blogs as such asFreelance Switch or the Tuts+ network.

They also have a few marketplaces where you can buy various digital products as such as graphic files, WordPress themes, XHTML templates and a lot more.
What this plugin do is to let you display some Envato products of your choice, linked with your affiliate link. Simple, and extremely efficient.
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