Now that it’s been nine months since AllPosters.com Inc. merged with Art.com the two companies are beginning to combine operations and build a common synergy.

Allposters, No. 155 in the Internet Retailer Top 400 Guide to Retail Web Sites, merged with Art.com (No. 93) in March. Today, the new company has been renamed Art.com Inc. and is operating out of the AllPosters’ headquarters in Emeryville, CA. Art.com’s former headquarters in Raleigh, NC, is being used as a customer service center and to house certain information technology operations, a spokeswoman says.

The companies completed their merger without much fanfare and aren’t revealing any terms of the deal, including which company made the acquisition. But Art.com is still evaluating certain post-merger operations and marketing issues and will maintain Art.com and AllPosters.com as stand-alone e-commerce sites. “Each brand targets different customers,” the spokeswoman says. “Both retail web sites will continue to exist.”

Art.com founders Joshua Chodniewicz and Michael Marston are remaining with the combined company. Chodniewicz is executive vice president of corporate development and Marston is the new vice president of e-commerce and product development. Both positions report directly to CEO Michael Heinstein, who previously was the top executive at AllPosters.

The merger of Art.com and AllPosters.com had been talked about and widely anticipated by several online art retailers and retail analysts. Combined the new Art.com will have estimated annual e-commerce sales of more than $100 million, according to the Top 400 Guide.

“The merger positions our combined company to continue and even enhance the rate of growth both companies enjoyed previously,” the spokeswoman says.