Blog search and RSS site Feedster has landed a new round of funding, with Japanese firm Mitsui & Co., Ltd. buying into the company.

The official statement at the Feedster blog suggests that the involvement of Mitsui will also see an expansion by the company into the Japanese blogging market.

“We are pleased to have Mitsui as an investor,” said Chris Redlitz, Feedster’s Vice President, Sales and Marketing. “Feedster is already a market leader in blog search and content syndication. With this investment we continue to distance ourselves from the field and prepare for global expansion.”

No word on the amount of dollars involved was disclosed.