Eons, which bills itself as a social network for the over-50s, has raised $22m (£11.4m) in its second round of funding.
The Boston-based firm has raised the cash from an investor group led by Charles River Ventures. Also involved were new investors Intel Capital and Humana, along General Catalyst Partners and Sequoia Capital, which had invested previously.
Like any other social network, Eons offers its users a profile page, where they can post photos and videos, but the site offfers a range of other features aimed at over-50s.
Although numerous other sites on the web are aimed at the same age bracket, Austin Westerling of Charles River Ventures believes that Eons has found a gap in the market:
"Eons has experienced very strong market interest since its launch just seven months ago."
"We are excited about the prospects for Eons as it engages this new generation of spirited 50-plus adults who possess historical levels of purchasing power."
"Additionally, Eons has assembled a world-class team in a space that is virtually unaddressed by other social networking sites."
Recent surveys have revealed that older people, or 'silver surfers', are using the internet more and more, with 41% of retired people listing the internet as their preferred pastime.