Online file sharing service YouSendIt has announced that they’ve raised another $15 million in a series D round. And it appears that the site is doing quite well: it has 215,000 paying members, each shedding out $10 a month. YouSendIt was founded in 2004 and has so far raised $65 million, including the latest round.

Popularity: 3% [?]

Gaming social network hi5 has announced that they’ve raised $14 million in a Series C round led by Crosslink Capital, bringing the total funding to $34 million. Hi5 was founded back in 2003 and will use the new cash to expand into virtual goods and offer social games on its site. However, judging from their site, they should probably spend some of the cash hiring a web designer to improve the look of their site.

Popularity: 6% [?]

Groupon is riding high these days — 1 billion dollar valuation will do that to you — and is so popular that competitors are springing up on an almost daily basis. One of the bigger competitors is BuyWithMe, which has just raised an impressive $16 million in a series B round, making their total funding at $21 million. BuyWithMe focuses more on the female audience, and is represented in 20 cities in the US.

Popularity: 7% [?]

US President Barack Obama had promised investment in alternative technologies, and now he delivered part of that promise with a $2 billion investment from the Department of Energy into solar startups Abengoa Solar and Abound Solar Manufacturing. Abengoa plans to use the money to build a solar plant in Arizona that can power 70,000 homes, making it one of the largest plants in the world.

Popularity: 6% [?]

Foursquare has just closed another round of funding, bringing the total amount to over $40 million. The latest round was led by Andreessen Horowitz, and the company was valued at $95 million. Foursquare has 27 employees and has recently moved into new offices in New York.

Popularity: 4% [?]

Soonr, the startup with some interesting cloud syncing technology, has announced that they’ve raised $4.5 million in VC funding from HighBAR Ventures. This brings Soonr’s total funding to just over $20 million. The company was founded 2007 and offers technology for syncing data with the cloud, from computers, to mobile phones and other devises.

Popularity: 2% [?]

Former British Prime Minister Tony Blair has joined Venture Capitol firm Khosla Ventures to advise on clean technology and startups in the area. Over the past two years, Blair has advised JP Morgan and Zurich Financial Services on climate change and related issues, Mashable reports.

Blair has been promoting clean energy and technology ever since he got into office in the late 90s as the British Prime Minister.

Popularity: 1% [?]

Foursquare has announced that it’s adding over 15,000 new users every single day, which is quite the growth. The news was revealed by Foursquare CEO Dennis Crowley, in an interview at the Business Insider Startup 2010 event. He also addressed the acquisition rumors by saying they’ll stay independent for now, and continue raising money to expand their offerings.

Popularity: 1% [?]