This VC and his firm don't focus on particular technologies or sectors. Instead, they look for startups with a kind of network potential. Here's why.

Pete Flint and his team at venture-capital firm NFX try to find startups with the potential for network effects.
A network effect is a phenomenon where a product or service becomes more valuable, the more people that use it.
Flint and his partners have experience with network-effect companies. Flint, for example, was the founder and CEO of real-estate listing firm Trulia.
NFX just raised $275 million for its second fund, which Flint and his partners plan to invest in early-stage companies.
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