The company is still rolling tests, but some users are reporting to get from a $4 to a $6 CPM. Regardless of the pay rate, though, this is a very intrusive form of advertising, so think twice before using it.

Pop-ups are a common yet annoying form of advertising on the Internet. If you are just trying to make a much money as possible from your website, you could experiment with them.

If you are trying to grow the traffic and generate loyal visitors, however, you probably should stay away from them. Just consider the hundreds of pop-up blockers out there: there is a reason why they are so popular.

Ad networks that use pop-ups:

• Tribal Fusion
• PayPopup
• PopupAd
• Adversal

If you website has specific columns or events (e.g., a weekly podcast, an interview series, a monthly survey, a special project) you could find companies to sponsor them individually.

This method increases the monetization options for website owner, while giving advertisers the possibility to target a more specific audience and with a reduced commitment.

Mashable illustrates the case well. They have several advertising options on the site, including the possibility to sponsor specific columns and articles, including the “Daily Poll” and the “Web 2.0 Invites.”

Problogger also runs group writing projects occasionally, and before proceeding he publicly announce the project asking for sponsors.