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Podcasting is a common practice among modern bloggers. Podcasts are recorded by the creator, in a similar fashion to radio, and placed on web hosts, for others to download as audio files. Listeners download these files and listen to them via their computers or audio players. Podcasts can also be automatically downloaded via push technologies such as RSS, the same way one would subscribe to a text RSS feed. The term ‘podcast’ is an amalgamation of the words “iPod” and “broadcast”. This stems from the practice of people putting podcasts into portable audio players such as the iPod. Apple’s iTunes Music Store offers users a podcast directory through which users can find and automatically download podcasts listed. The term podcast has also been defined as "Personal On Demand broadCast" by Creative Technologies chairman Sim Wong Hoo. This is however, a more obscure definition. Some regard it as Creative's way of breaking the association between podcasts and Apple's iPods.
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Videocasting, or vlogging, is a variation of podcasting in which the user records video as opposed to audio. The concept is similar. Videocasts typically take the form of talkshows, or even instructional programmes for viewers to download. An example of a topical videocast is watchmacTV, where Mac aficionados upload videos and advertisements concerning their favourite company, Apple Computer.
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A photo says a thousand words, as the old saying goes. Photologs, or blogs composed entirely of photos, as opposed to words, are being increasingly common. In a photolog, a blogger uploads photos onto is blog. The photos are then displayed as albums or slideshows. EXIF information regarding exposure, location and creator, is often included with the photos. Comments can typically be made via a commenting system. Both professional and amateur photographers see photologs as an avenue of displaying their work. Photo albums are also becoming common supplements to ordinary blogs.
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