what is a podcast ?

A podcast is a digital media file, or a series of such files, that is distributed over the Internet using syndication feeds for playback on portable media players and personal computers. The term "podcast," like "radio," can mean either the content itself or the method by which it is syndicated; the latter is also termed .

what is a blog? who writes blogs in our class?

Blog is a type of website that is usually arranged in chronological order from the most recent ‘post’ (or entry) at the top of the main page to the older entries towards the bottom.
Blogs are usually (but not always) written by one person and are updated pretty regularly. Blogs are often (but not always) written on a particular topic - there are blogs on virtually any topic you can think of. From photography, to spirituality, to recipes, to personal diaries to hobbies - blogging has as many applications and varieties as you can imagine. Whole blog communities have sprung up around some of these topics putting people into contact with each other in relationships where they can learn, share ideas, make friends with and even do business with people with similar interests from around the world.
Blogs usually have a few features that are useful to know about if you want to get the most out of them as a reader. Lets examine a couple briefly.
Arten,Ayesha,BoRam,Emilia,Kevin,Lei,Liping,Ling,Umma,Umme,Veronica,Vicky,Weiyun,Zainda,Zeinab are write blog in our class.

Hello

Hello,everyone. My name's miya, I come to Austraila form 9 mouths now . Today is my brithday, I am so happy today ,because my classmate Emily bring the cake for me. we ate it at teatime.everyone all sing song for me .
Thanks everybody .
At last ,happy brithday to me agina.