Amazon has revealed that over the past three months, ebook sales on the Kindle have surpassed sales of Hardcover books from its store. For every 100 hardcover books, 143 Kindle books were sold, and in the last month only, the number has been 180 ebooks to 100 harcovers.

Popularity: 4% [?]

Posterous, the mini-blogging service and Tumblr competitor, is growing at an unprecedented rate, over 700% per year, according to Quantcast. Posterous reportedly has 5.3 million monthly unique visitors — 2.2 million in the U.S.

Posterous was founded in 2008 and has so far raised $5.14 million in VC funding.

Popularity: 6% [?]

Mighty online retailer Amazon has acquired Woot, the company which provides a deal-of-the-day on many products, and which pretty much inspired Groupon in the first place.

Now Amazon and Woot have announced that Amazon has acquired the company for an undisclosed sum, and has stated that Woot will still remain an independent company.

Popularity: 7% [?]

eBay has acquired iPhone app Redlaser, which provides an app and tools for bar-code scanning. eBay will integrate its auctions into the app, and vice versa, eBay intends to integrate RedLaser’s barcode-scanning tech into its own iPhone apps.

Popularity: 4% [?]

Online Targeting startup Resonate Network has announced that they’ve raised $5 million in a Series A round led by led by Greycroft Partners and iNovia Capital. Resonate has previously raised $2 million in angel funding. The Reston, Virginia based company was founded in 2007, and creates software and tools for online targeting — an increasingly competitive sector.

Popularity: 5% [?]

Digg has been losing traffic and audience over the past year, and rightfully so, the service hasn’t evolved in a long time and there isn’t much “social” to it when it’s only a handful of users to account for most of the submissions to the front page. However, Digg today unveiled the brand new Digg.com, which adds new features, making it look pretty much like Twitter and Facebook.

Popularity: 7% [?]

Yesterday, during the pivotal game 7 of the NBA Finals between the Lakers and the Celtics (Lakers won, FYI), Twitter users were posting over 3,000 Tweets per second — a new record. This is far more than the average of around 700 tweets per second, and more than even during large World Cup matches.

Popularity: 4% [?]

The third major release of WordPress has been released, version 3.0 adds a ton of new features, including the ability to run multiple blogs on the same WordPress installation, and general features that make WordPress more of a fully fledged CMS than just a blogging platform.

Popularity: 5% [?]