Joel Liu's Library tagged → View Popular, Search in Google
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- Aardvark (acquired by Google): vark.com
- AllExperts: allexperts.co
m - AnswerBag: answerbag.com
- Answerbase: answerbase.com
- Answerly (YC '10): answerly.com
- Answers.com: answers.com
- Expert Answer Search Aggregator http://Answerica.com
- Ask MetaFilter: ask.metafilter.com
- Askville (Amazon): askville.amazon
.com - Bloomfire: bloomfire.com
- BlurtIt: blurtit.com
- ChaCha: chacha.com
- eDoorways (Solve): eDoorways.com
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To be honest I don't really think Stack Exchange and Quora are the same thing. Or, to be jargonny, "we're not in the same space."
Quora is Yahoo!Answers done really well... it's more social and bloggy, and it's for chat and subjective questions. It's kind of like Twitter in a Q&A format with long, blog-type answers. It's full of VCs and tech journalists, unlike Yahoo!Answers which is full of teenagers asking questions about reproduction in mammals.
Stack Exchange is more a reference tool... something you use when you NEED a specific answer to an actual question that actually has an answer. We're the reference section of the library, they're an awesome salon where smart people are shootin' the shit.
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Stack Exchange is mostly Questions & Answers
Quora is mostly Questions & Opinions
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Over 80 percent of questions get a good answer, Mr. Spolsky wrote, and many of the new Stack Exchange sites have 100 percent answer rates. One of the issues with Quora, a well-funded Bay Area startup founded by former Facebook employees, is the high number of unanswered questions.
One way to solve this problem, Mr. Spolsky realized, was to separate Q&A sites by topic—that way each site attracts a more engaged group.
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“We learned a long time ago that the only way to get questions answered promptly is to have a critical mass of knowledgeable users, so we have an onerous process called Area 51 where sites are proposed, discussed, and voted on. If a proposed site doesn’t have critical mass, we just won’t create it. Even if it does get created, it has to maintain a certain level of traffic and quality or we’ll close it down,” he said.
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