SAN FRANCISCO — Pinterest on Thursday began letting users create “secret boards” that can only be seen by invitation at the hot online bulletin board service. “We thought the holidays were a perfect time to test one of our most frequently requested features: secret boards,” Pinterest software engineer Evrhet Milam…
Move over, Facebook. Pinterest, the social site that lets people “pin” pictures and content to create collections of interest, has become the latest company to be valued at more than $1bn (£630m), following a $100m round of funding. While estimates of the effective valuation implied by the investment vary between…