Signpost, the online ad platform for local businesses, has closed an additional $3.75 million in funding. The round was led by Spark Capital, an existing investor in the startup along with Google Ventures and angel investors including Jason Calacanis, Jack Herrick and Thomas Lehrman.

The funding follows Signpost’s recently announced partnership with Google Offers and product updates designed to make the company a one-stop online marketing platform.

“Signpost is providing merchants with a practical tool for managing customer acquisition and retention,” said Todd Dagres, founder and general partner at Spark Capital.

Signpost also has hired Christopher DePatria, former head of sales at AOL’s Patch, to lead its sales force. He will be responsible for Signpost’s sales operation and revenue strategy, overseeing and scaling the company’s sales force.

“Signpost has big ambitions to become the go-to marketing platform for small businesses,” said Stuart Wall, CEO and founder of Signpost. “This round of funding, in conjunction with adding Chris as the leader of our sales team, will help us grow our company and continue expanding our reach into new markets.”

Related links:

Signpost – blog post

Signpost – official site

GigaOm – Signpost, the AdSense for local business, raises $3.75M

Mediapost – Fledgling Signpost Secures $3.75 Million In Funding To Support SMBs

Betabeat – Signpost, the Startup That Promises to Drive Customers to Small Businesses, Raises $3.75 M. From Spark Capital