Bitcoin is a cryptocurrency and worldwide payment system. It is the first decentralized digital currency, as the system works without a central bank or single administrator. The network is peer-to-peer and transactions take place between users directly, without an intermediary. These transactions are verified by network nodes through the use of cryptography and recorded in a public distributed ledger called a blockchain. Bitcoin was invented by an unknown person or group of people under the name Satoshi Nakamoto and released as open-source software in 2009.
Bitcoins are created as a reward for a process known as mining. They can be exchanged for other currencies, products, and services. As of February 2015, over 100,000 merchants and vendors accepted bitcoin as payment. Research produced by the University of Cambridge estimates that in 2017, there are 2.9 to 5.8 million unique users using a cryptocurrency wallet, most of them using bitcoin.
Growth hacking is a marketing technique developed by technology startups which uses creativity, analytical thinking, and social metrics to sell products and gain exposure. It can be seen as part of the online marketing ecosystem, as in many cases growth hackers are simply good at using techniques such as search engine optimization, website analytics, content marketing and A/B testing which are already mainstream.
Growth hackers focus on low-cost and innovative alternatives to traditional marketing, e.g. utilizing social media and viral marketing instead of buying advertising through more traditional media such as radio, newspaper, and television.
Growth hacking is particularly important for startups, as it allows for a “lean” launch that focuses on “growth first, budgets second”. Facebook, Twitter, LinkedIn, AirBnB and Dropbox are all companies that use growth hacking techniques.
This came as an email from Google on July 6, 2014:
A Farewell to Orkut
After ten years of sparking conversations and forging connections, we have decided that it’s time for us to start saying goodbye to Orkut. Over the past decade, YouTube, Blogger and Google+ have taken off, with communities springing up in every corner of the world. Because the growth of these communities has outpaced Orkut’s growth, we’ve decided to focus our energy and resources on making these other social platforms as amazing as possible for everyone who uses them.
We will shut down Orkut on 30 September 2014. Until then, there will be no impact on you, so you may have time to manage the transition. You can export your profile data, community posts and photos using Google Takeout (available until September 2016). We are preserving an archive of all public communities, which will be available online from 30 September 2014. If you don’t want your posts or name to be included in the community archive, you can remove Orkut permanently from your Google account. Please visit our Help Centre for any further details.
It’s been a great 10 years, and we apologise to those of you still actively using the service. We hope that you will find other online communities to spark more conversations and build even more connections for the next decade and beyond.