How to get advertising for a website (NOT GOOGLE ADS)?

[Playboysmurf]

So hypothetically you have a website like Facebook.
How would you go about selling advertising space on the site?


I DO NOT WANT TO KNOW ABOUT GOOGLE ADSENSE!

[Maze Jinny]

Once you have your direct advertising program established, you will start to receive inquiries from people. On the beginning, however, you will need to hunt advertisers down. Do not get discouraged if get turned down initially, provided you have all the aforementioned requirements, sooner or later you will find someone willing to take a shot on your site.
People linking to your site or articles: If a company is willing to link to your articles or to add your website under its “Links” or “Resources” section, it is also probably willing to discuss about advertising on your site. Keep track of those incoming links.
People leaving comments/e-mails: The same principle applies to people leaving comments on your blog or sending you e-mails. If among them you see an employee or the owner of a company that could be interested on your website, bingo! Contact him or her and get the conversation going.
AdWords advertisers: Through out your search for advertisers you will notice that most of the established companies are not aware of the benefits of online advertising. If a certain company is already spending money on Google AdWords, however, it is very likely that it would also be open to other forms of online advertising. Think about some keywords that are related to your topic and Google them. Check the sponsored links that will appear and contact them. (You can also check the advertisers that appear on the Adsense units of related websites)
Other advertising networks: While Google AdWords is by far the largest advertising network on the Internet, there are many others that could be useful. Check the companies that are spending money on AdBrite, Text-Link-Ads, BlogAds, SponsoredReviews and so on.
Banner advertisers on similar sites: Check out popular websites on your niche and see what companies are advertising there. Provided you offer them an interesting deal (i.e., a reasonable price for your size), I am pretty sure they will be interested.
Create a “Potential Sponsors” bookmark folder: This technique produced outstanding results for me. I have a bookmark folder on my browser called “Potential Sponsors.” Every time I come across a company or website that could be interested in sponsoring my website, I bookmark it. Currently I have over 100 bookmarked sites on that folder, and I have not approached half of them yet.

[al H]

I would create program for selling ads on this site.