an article telling why do we have to use blog in ELT with reference.

Blog

A blog (a blend of the term web log) is a type of website or part of a website. Blogs are usually maintained by an individual with regular entries of commentary, descriptions of events, or other material such as graphics or video. Entries are commonly displayed in reverse-chronological order. Blog can also be used as a verb, meaning to maintain or add content to a blog.
Most blogs are interactive, allowing visitors to leave comments and even message each other via widgets on the blogs and it is this interactivity that distinguishes them from other static websites.
Many blogs provide commentary or news on a particular subject; others function as more personal online diaries. A typical blog combines text, images, and links to other blogs, Web pages, and other media related to its topic. The ability of readers to leave comments in an interactive format is an important part of many blogs. Most blogs are primarily textual, although some focus on art (art blog), photographs (photoblog), videos (video blogging or vlogging), music (MP3 blog), and audio (podcasting). Microblogging is another type of blogging, featuring very short posts.
As of 16 February 2011 (2011 -02-16), there were over 156 million public blogs in existence.

Origins

Before blogging became popular, digital communities took many forms, including Usenet, commercial online services such as GEnie, BiX and the early CompuServe, e-mail lists and Bulletin Board Systems (BBS). In the 1990s, Internet forum software, created running conversations with "threads." Threads are topical connections between messages on a virtual "corkboard."
The modern blog evolved from the online diary, where people would keep a running account of their personal lives. Most such writers called themselves diarists, journalists, or journalers. Justin Hall, who began personal blogging in 1994 while a student at Swarthmore College, is generally recognized as one of the earliest bloggers, as is Jerry Pournelle.  Dave Winer's Scripting News is also credited with being one of the oldest and longest running weblogs.  Another early blog was Wearable Wireless Webcam, an online shared diary of a person's personal life combining text, video, and pictures transmitted live from a wearable computer and EyeTap device to a web site in 1994. This practice of semi-automated blogging with live video together with text was referred to as sousveillance, and such journals were also used as evidence in legal matters.
Early blogs were simply manually updated components of common Web sites. However, the evolution of tools to facilitate the production and maintenance of Web articles posted in reverse chronological order made the publishing process feasible to a much larger, less technical, population. Ultimately, this resulted in the distinct class of online publishing that produces blogs we recognize today. For instance, the use of some sort of browser-based software is now a typical aspect of "blogging". Blogs can be hosted by dedicated blog hosting services, or they can be run using blog software, or on regular web hosting services.
Some early bloggers, such as The Misanthropic Bitch, who began in 1997, actually referred to their online presence as a zine, before the term blog entered common usage.

Resource : http://en.wikipedia.org/wiki/Blog#Origins

learning reflection on lessons an article telling why do we have to use blog in ELT with reference.

Why blog?

So, why should you blog with your students? There are many reasons why you may choose to use weblogs with students. One of the best reasons is to provide a real audience for student writing. Usually, the teacher is the only person who reads student writing, and the focus of this reading is usually on form, not content. With weblogs, students can find themselves writing for a real audience that, apart from the teacher, may include their peers, students from other classes, or even other countries, their parents, and potentially anyone with access to the Internet.

Here are some other reasons for using blogs:

·         To provide extra reading practice for students.
This reading can be produced by the teacher, other students in the same class, or, in the case of comments posted to a blog, by people from all over the world.

·         As online student learner journals that can be read by their peers. 

The value of using learner journals has been well documented. Usually they are private channels between teacher and student. Using a blog as a learner journal can increase the audience.

·         To guide students to online resources appropriate for their level.

The Internet has a bewildering array of resources that are potentially useful for your students. The problem is finding and directing your learners to them. For this reason, you can use your tutor blog as a portal for your learners.

·         To increase the sense of community in a class.

A class blog can help foster a feeling of community between the members of a class, especially if learners are sharing information about themselves and their interests, and are responding to what other students are writing.

·         To encourage shy students to participate.
There is evidence to suggest that students who are quiet in class can find their voice when given the opportunity to express themselves in a blog.

·         To stimulate out-of-class discussion.
A blog can be an ideal space for pre-class or post-class discussion. And what students write about in the blog can also be used to promote discussion in class.

·         To encourage a process-writing approach. 
Because students are writing for publication, they are usually more concerned about getting things right, and usually understand the value of rewriting more than if the only audience for their written work is the teacher.

·         As an online portfolio of student written work.
There is much to be gained from students keeping a portfolio of their work. One example is the ease at which learners can return to previous written work and evaluate the progress they have made during a course.

·         To help build a closer relationship between students in large classes.
Sometimes students in large classes can spend all year studying with the same people without getting to know them well. A blog is another tool that can help bring students together.