What WEB 2.0 and MASHUP are?

Formerly the web pages were static therefore only gave the information to the user and they made it little interactive, with the appearance of the social networks and programming languages by the part of the server that accede to data bases, was born the Web 2.0 The capacity Collaborate and share information online and use web applications. Some services like wikipedia, blogs and web services like Diigo are components of Web 2.0.

A mash-up is a web page that integrates complementary elements of other web pages with the function of creating a single service, a web page mash-up can gather different types of data and present them in a graphical interface for example show a map where the User sees in which cities a certain hashtag is being used and clicking on seeing the shared content in social networks.

The Twitter platform was born in October of 2006 in San Francisco (United States). Twitter is the name of a microblogging network, which is a variant of blogs, its difference lies in the brevity of their messages and their ease of not exceeding 140 characters. These entries are known as tweets. When a user posts a message on their Twitter page, it is automatically sent to all users who have chosen the option to receive them. This message can also be viewed immediately in the user profile.
There are several concepts associated with the use of Twitter: followers or followers are those people who follow an account, most popular topics or trending topics are the most mentioned topics of the day, retweet is to share news that has been published in another account so that Followers of ours know it and hashtags are words or phrases that begin with the hash symbol or numeral (#) to create a list (by clicking on a hashtag, Twitter performs a search and returns the messages of all users who have used that same hashtag).

Facebook is a social network created by Mark Zuckerberg in 2004, It is currently estimated that the social network has more than 500 million users.
In facebook there are two types of accounts: those of any normal user are totally free and the one that can open the companies serve to offer products or services and maintain close contact between companies and clients. In turn in the company accounts there are free and paid versions.
Facebook operates worldwide as a social network in which people, after creating a profile and complete the data they want, can perform different activities among which the most popular are to find and find numerous contacts in real life, express their opinions and Moods, upload and comment photos, play games, create networks and groups with different goals.

One of the most important characteristics of Facebook is its constant updating and it is because of this that one can, in his profile, instantly observe the different actions, decisions and activities that make the contacts of his list. In addition, Facebook makes it easier for people to get in touch with each other by recommending contacts and suggesting friendships with people who have friends or acquaintances.

LinkedIn is a social network founded in December 2002. It is currently the largest professional network in the world and has more than 150 million users in more than 200 countries.
It is oriented exclusively to the segment of work, to the user when it registers, what it does is to make known its CV to the world. In addition to uploading your photos and contact information, you can specify your current works, previous works, experiences, a brief excerpt, interests, courses, titles you have, where you studied and also allows you to establish contact with other members focused on a field professional experience .
The main goal of LinkedIn is to foster what they call professional connections that are graded and can be used to:

• Look for job or business opportunities based on recommendations for a connection.

• Companies can advertise job opportunities and users can book jobs that interest them.

• Second and second degree connections can be used to establish contacts for business or professional purposes.

• You can use identity among employees of the same company in groups.

• There is what is called LinkedIn Answers, which allows users to ask questions to the community.

• It is possible to create groups for users with common interests, for example, by professional area