Ariel Eckstein, LinkedIn Europe director, said the site’s membership in Eastern Europe is constantly increasing and the network has strong growth potential in the region.

More than 400,000 Romanian employees already have profiles on LinkedIn and over 1,000 groups are related to Romania. Large local companies, such as Romtelecom, Petrom and Romstal, have dedicated pages on the network.

Most Romanian profiles are for people working in the financial-banking, IT & services and telecommunications industries. The companies with the highest number of employees on LinkedIn are Petrom, BCR and Romtelecom.

At the same time, LinkedIn also launched the Turkish and Russian language versions. It was already available in English, French, German, Italian, Portuguese and Spanish.

Between 2009 and 2010, LinkedIn’s turnover doubled to more than $432 million. Its net profit in 2010 was $3.43 million, after losses of $4 million in 2009.