Why are ebooks so popular?

Is a subjective perception but it seems to me that e-books are experiencing a growing popularity among English-speaking bloggers.

Why are they so convenient?
For those who have just started in this world of blogs and online business just have to take a step back. There are many reasons that explain why Ebooks are so popular these days, and this are some of this reasons:

Digital format: one of the popular formats is PDF. As the name says the book is not available in physical version but in digital with the possibility of viewing it through different devices (iPad, Kindle, laptop, PC, etc.). An electronic book also allows an easy diffusion that being of payment can be a great disadvantage for the author.
Low cost of acquisition: since there is no cost of printing none the production of a new e-book does not consume any type of resources. Consequently the selling price may be much lower leaving still an attractive profit margin.
Total independence of the author: even if this is changing to take out a book you typically need an editorial. An e-book allows anyone to become an author without having to invest many resources other than own time.

Reasons for the user to purchase an e-book
Lower cost is not the only reason to buy an e-book. It is probably one of the least relevant of the ones exposed here.

1. Trust in the author: When someone buys an e-book, there is usually some confidence in the author. Many bloggers use the link already created with readers to develop offers that 100% with the needs of their audience. Trust is the basis of business and for anyone who wants to create a community around their blog.

2. Tutorial content: The vast majority of e-books meet one or more viral content requirements. A high percentage of eBooks are manuals or tutorials. It is suitable for a beginner target audience looking for information that provides a solution to a problem step by step. Between 80-90% of the visitors of your blog are newbies within the theme that you bring.

3. Offline use: even if it does not look like the always on status (still) does not exist. There are always moments of disconnection desired or involuntary. The e-book provides the ability to consume online content offline. Many authors already take into account the different formats that have different devices and platforms offering great flexibility for the consumer.

4. Saving time: an e-book fulfills an important task. A user does not buy it just because it costs him less than a book or can read it on his iPad. Sometimes it's even the identical content that already exists in blogs. The big difference is that an e-book does the work of structuring, adding and summarizing the content, starting with the simplest ending with the most complex.

You would not be the first to fail in the attempt to sell e-books online. Although you always see and read some success stories are often the exception. Given the reasons why a user is willing to pay for content on the internet (99.9% is free) you increase your chances of success.

What are your buying motives and tips for selling e-books online?