Clickable completes $14.5 million series B round of investment, led by Founders Fund, with additional backing from existing investors Union Square Ventures and FirstMark Capital. The funding amounts to a total of $22.5 million in capital, raised over the past 12 months. It will be used to accelerate Clickable’s momentum as the preeminent advertising solution for small and midsize marketers.

Clickable is an online solution that makes search advertising simple, instant and profitable. Clickable’s immediate activation and intuitive user experience make it easy for marketers to manage performance across all major search-ad networks, including Google, Yahoo and Microsoft.

“These investors are behind some of the Web’s pioneering and most successful businesses, including PayPal, Facebook, Feedburner, Twitter and Del.icio.us,” said Clickable CEO, David S. Kidder. “Their experience and vision will help Clickable accelerate product innovation and commercial expansion, while polarizing the marketplace with the idea of simplicity.”