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That is the latest view from Silicon Valley. Technology investors and entrepreneurs, long obsessed with connecting to teenagers and 20-somethings, are starting a host of new social networking sites aimed at baby boomers and graying computer users.

The sites have names like Eons, Rezoom, Multiply, Maya’s Mom, Boomj, and Boomertown. They look like Facebook — with wrinkles.

And they are seeking to capitalize on what investors say may be a profitable characteristic of older Internet users: they are less likely than youngsters to flit from one trendy site to the next.

“Teens are tire kickers — they hang around, cost you money and then leave,” said Paul Kedrosky, a venture capitalist and author of the blog “Infectious Greed.” Where Friendster was once the hot spot, Facebook and MySpace now draw the crowds of young people online.

“The older demographic has a bunch of interesting characteristics,” Mr. Kedrosky added, “not the least of which is tha