Photo Ad Network Pixazza Rounds Up Another $12 Million

Pixazza, a two-year-old start-up that likes to describe itself as “AdSense for photos,” has raised another $12 million in a Series B round led by Shasta Ventures. The previous investors in its $5.75 million A round have also re-upped.

The AdSense comparison is a nice hook for the Mountain View-based company, particularly because Google (GOOG) Ventures is one of its investors. But perhaps a more accurate analogy would be a company like Vibrant, which lets publishers turn text on their pages into clickable ads.

In this case, the images Pixazza works with become hyperlinked to e-commerce opportunities: Want to buy the boots in this photo? Click here. Etc.

In any case, you can read more about Pixazza here. For the record, the company says its publisher network now attracts 25 million unique visitors a month and serves up 8 billion image impressions a year.