????本周二上午，位于舊金山的新興私密鄰里社交應用Nextdoor宣布獲得6000萬美元新融資。本輪融資由老虎環球基金（Tiger Global Management）和凱鵬華盈（Kleiner Perkins Caufield & Byers）這兩家著名的風投基金領銜。投資者之間競爭非常激烈，有消息人士向《財富》雜志（Fortune）透露，Nextdoor目前估值約為6億美元。

????投資方還包括康卡斯特風險投資（Comcast Ventures），原有投資者基準資本（Benchmark）、格雷洛克合伙公司（Greylock Partners）、夏斯塔創投（Shasta Ventures）繼續跟投。此前的另一家投資方谷歌風投（Google Ventures）本輪沒有跟投。原因在于谷歌風投本輪未能獲得足夠大的投資配額，而它又拒絕按比例分配股權。（有數家投資機構都在競爭領投者，但目前尚不清楚其中是否包括谷歌風投。）

????所有新入資本都是“重要的”投資者，這意味著它們不能稀釋公司創始人和早期投資人的持股比例。

????Nextdoor在8個月前剛剛進行了一輪融資，共募得2100萬美元。公司首席執行官尼拉夫?托利亞表示，自己本來計劃在明年年初前，不會再和投資人聯系。他解釋說：“我們賬上還有足足3000萬美元，Nextdoor目前每月開支僅為125萬美元。不過，從今年夏天開始，投資者渴望進入的熱情非常高。所以，我們因勢利導，抓住這次機會充實了資金儲備。而且，我們還引入了非常優質的合作伙伴。老虎環球基金的李?菲克賽爾深諳國際化之道。凱鵬華盈合伙人約翰?杜爾堪稱新創企業教父，曾經投資過網景（Netscape）、亞馬遜（Amazon）和谷歌（Google）等科技巨擘?！?/p>

????杜爾和菲克賽爾不會加入Nextdoor董事會，不過，杜爾會以特別顧問的身份參與公司運營。兩人都力捧托利亞，認為Nextdoor有望成為繼Facebook、商務社交網站LinkedIn和Twitter之后互聯網行業的第四家標志性社交公司。

????菲克賽爾稱：“我們投資過Facebook和LinkedIn，我認為現在的Nextdoor和它們創業在初期時很像，尤其是LinkedIn。Nextdoor有機會在本地和鄰里社交上大放異彩，就像LinkedIn如今在職業人士中呼風喚雨一樣?！狈瓶速悹柎饲皬膩頉]有就老虎基金的投資接受過任何采訪。

????杜爾補充說：“我多次提到過SoLoMo這一理念，即社交／移動／本地。Nextdoor是三位一體的代表?！?/p>

????Nextdoor專為社區社交設計，從八卦新聞到誰是本地最好的維修工，涉及的話題可謂包羅萬象。它還與一些政府機構進行合作，例如紐約市政府可以在Nextdoor上推送公共安全信息。

????Nextdoor上的每個社區都由居住在該社區的第一個成員創建，Nextdoor將這個地理意義上的社區限定在750個成員左右。（根據城區和郊區，具體人數略有不同。）Nextdoor自稱已經覆蓋了美國七分之一的社區。過去一年，它的用戶增速高達400%。

????Nextdoor, a private social network for neighborhoods, this morning announced that it has raised $60 million in new VC funding, co-led by Tiger Global Management and Kleiner Perkins Caufield & Byers. The round was competitive, with sources telling Fortune that it values the San Francisco-based company at approximately $600 million.

????Comcast Ventures also participated, alongside existing shareholders Benchmark, Greylock Partners and Shasta Ventures. Prior backer Google Ventures did not participate -- passing up a small 'pro rata' after failing to secure a larger allocation (several insiders attempted to lead the new round, but it's unclear if GV was one of them).

????All of the new capital is considered "primary," meaning that none of it is being used to cash out company founders or early investors.

????The new round comes just eight months after Nextdoor raised $21 million, and CEO Nirav Tolia says that he hadn't planned to contact investors until early next year. "We had $30 million on the balance sheet and only were burning a million and a quarter million per month, so this wasn't a need-driven round," he explains. "But we had a fairly unprecedented level of incoming demand starting in the summer, and decided to take advantage of the opportunity to grow our balance sheet and bring in some great partners. Lee Fixel of Tiger is unbelievable when it comes to international expansion, and I can't think of anyone who's been a better company builder than [Kleiner Perkins partner] John Doerr, who was involved with Netscape and Amazon (AMZN) and Google (GOOG)."

????Neither Doerr nor Fixel will join the Nextdoor board, although Doerr will serve as a special advisor. Both of them echo Tolia's belief that Nextdoor could be the fourth major social network, after Facebook (FB), LinkedIn (LNKD) and Twitter (TWTR).

????"We were investors in both Facebook and LinkedIn, and I think there are a lot of similarities to the early days, particularly of LinkedIn," says Fixel, who never before has agreed to be interviewed about a Tiger investment. "They have an opportunity to do for local and neighborhood social life what LinkedIn did for professional life."

????Doerr adds: "I've talked a lot about SoLoMo, which stands for social/mobile/local. Nextdoor is all three."

????The product is designed for neighbors to interact on a variety of topics, from social events to the best local repairman. It also has partnered with certain municipal governments, including New York City, which have the ability to push public safety information into the private networks.

????Each neighborhood gets created by the first member who lives within a particular neighborhood, which the company defines as a geographic area with approximately 750 households (it ranges a bit, depending on rural vs. urban). So far, Nextdoor believes it has networks for one out of every seven American neighborhoods, and says that its reach has increased 400% over the past year.