10 things in tech you need to know today

Good morning! Here's the tech news you need to know this Wednesday.

1. Google announced a range of new devices at its biggest product launch event of the year. Devices include the Pixel smartphones, a Home speaker, and a virtual reality headset called Daydream View.

2. Facebook says a "technical issue" caused illegal listings to flood its new Craigslist competitor. Everything from drugs to sex services appeared on Facebook's new Marketplace.

3. Amazon is banning most reviews that were written in exchange for a free product. The company updated its community guidelines on Monday.

4. Early Twitter investor Chris Sacca says he's disappointed with the company. He's keen for it to sell.

5. A Facebook exec issued a stark warning to entrepreneurs in "Startup Nation." Adi Soffer Teeni, the manager of Facebook Israel, said Israel's position as the number one spot for innovation outside Silicon Valley isn't as secure as some people might think.

6. Pinterest has named its first chief financial office. The appointment is a signal that the company could be inching closer to an IPO.

7. A travel website that helps people move around Europe has just raised $70 million (£55 million). The website is called GoEuro.

8. A former Yahoo executive says CEO Marissa Mayer kept secrets from key members of the security team. It raises more questions about business practices at the troubled internet company.

9. The venture-capital backed coffee chain that Silicon Valley is obsessed with is expanding to three new cities. Blue Bottle Coffee will launch in Boston, Miami, and Washington, DC.

10. The future of anonymous messaging site 4chan is uncertain. The controversial site is reportedly in financial difficulty.