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Today in Tech: The exclusive Steve Jobs book excerpt

Fortune's curated selection of newsworthy tech stories from the last 24 hours. Sign up to get the round-up delivered to you every day.

"I'm not a very social person," but "Google+ I instantly found compelling." - Google cofounder Sergey Brin (Search Engine Land)

* Looking forward to Walter Isaacson's authorized biography of Steve Jobs? The first exclusive excerpt, highlighting Jobs' nearly 30-year frenemy relationship with Bill Gates, will run in the latest issue of MORE

Today in Tech: Facebook wants you to 'Subscribe' now

Fortune's curated selection of newsworthy tech stories from the last 24 hours. Sign up to get the newsletter delivered to you every day.

* Facebook unveiled the "Subscribe" button that will allow its 750 million-plus active monthly users to better control what their friends share with them, including updates, photos, videos, and links. It  will also let users "subscribe" to public status updates from others much in the same way Twitter lets its users MORE

Can Singapore engineer creativity?

Singapore's government gets what it wants — from social policy to tourism. But its bid to enhance the nation's creative atmosphere may be a challenge more difficult any other.

By Katherine Ryder, contributor

FORTUNE -- Singapore's government has a way of getting what it wants. Fertility rates too low? The Social Development Unit organizes boat-trips to spin romance among the singles crowd. Not enough tourism? The Tourism Board spearheads the development of MORE

Today in Tech: Carol Bartz fired from Yahoo, says so from iPad

Fortune's curated selection of the day's most newsworthy tech stories from all over the Web. Sign up to get the newsletter delivered to you every day.

"I am very sad to tell you that I've just been fired over the phone by Yahoo's Chairman of the Board. It has been my pleasure to work with all of you and I wish you only the best going forward. Carol / Sent from my iPad" -- former MORE

Today in Tech: Is Groupon running out of money?

Fortune's curated selection of the day's most newsworthy tech stories from all over the Web. Sign up to get the newsletter delivered to you every day. 

* Is Groupon running out of money? Henry Blodget over at Business Insider does the math and concludes -- among other things -- that as of June 30, the leading daily deal site owed $392 million to merchants for sold Groupons, significantly more than the $225 million of MORE

Groupon responds to LivingSocial swipe

FORTUNE -- At Fortune's Brainstorm Tech conference, LivingSocial CEO Tim O'Shaughnessy had some choice words for Groupon in which he accused the daily deals competitor of copying several of his company's recent efforts, including LivingSocial Instant, a service offering near-real-time deals that may only last one or two hours.

We ran an edited version of his comments earlier this week.

"So we launched LivingSocial Instant, and Groupon launched their clone of that MORE

LivingSocial CEO: Groupon is a copycat

Both daily deal sites are thriving, but as Tim O'Shaughnessy sees it, LivingSocial outpaces Groupon where it matters most: innovation.

FORTUNE – Few areas in tech are more buzz-worthy than the daily deals space right now. Groupon, often dubbed the world's "fastest-growing company," recently filed for an IPO, while LivingSocial, which reportedly picked a team of underwriters for its own public offering, isn't far behind.

But as LivingSocial CEO Tim O'Shaugnessy sees MORE

482 Groupon clones, one new business model

By following the Law of the Aggregator, Yipit has emerged as the go-to source for analysis in the overheated market for daily deal sites.

FORTUNE -- On the Web, a genre isn't truly important until somebody creates a site that obsessively tracks its every update. Political news? Legitimized by Slate's Today's Papers (may it rest in peace), the Drudge Report and Talking Points Memo. LOLCats? Nothing without ICanHazCheezburger. Social networks? Let us MORE

Don't call it the next tech bubble - yet

Signs of exuberance are everywhere: Tesla roadsters, soaring real estate, overpriced vinegar - and eye-popping valuations for pre-IPO companies like Facebook and Zynga. So why are so many Silicon Valley denizens reluctant to use the B-word?

By David A. Kaplan, contributor

FORTUNE -- Michael Dreyfus, 49, is a leading real estate broker in the heart of Silicon Valley. During the winter he sensed the housing market was coming back, though he hadn't MORE

Today in Tech: Facebook-Skype announcement today?

Fortune's curated selection of the day's most newsworthy tech stories from all over the Web. Sign up to get the newsletter delivered to you every day.

* The Wall Street Journal reports that Twitter is looking to raise a new round of private funding that would result an influx of hundreds of millions at a new valuation of $7 billion. The news comes just seven months after the social network raised $200 million at MORE