When you talk about posting ads on your site, you generally have to spend money to make it. You have to find a place to host your ads, which helps to keep up with stats, and helps to appease and obtain clients.

Of course with companies like OpenX, you could just do it for free. Here’s a summary of OpenX, from their website:

OpenX is a hugely popular, free ad server designed by web publishers for web publishers. It provides everything you need to manage your online advertising. Make more money from online advertising today.

Maximise your revenue by showing the right ad campaigns to the right people. Track the performance of all your online advertising from one intuitive interface. Free to mix direct, network and house ads to optimise your revenue per page.

OpenX is open source software trusted by over 30,000 web publishers around the world. Join them.

Perusing through their site, they do seem to be legitimate. Most of what they boast about features wise, is generally something you have to pay in other sites.

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