There is more than one reason. * Many Internet users surf the web from their workplace or from public computers. Listening to audio in these settings, even wit

There is more than one reason. * Many Internet users surf the web from their workplace or from public computers. Listening to audio in these settings, even with headphones on, is very difficult. This drives down the demand for audio. Heck, most people never even bother listening to audio when it is available, preferring to read through the transcripts instead. * As a rule, anyone smart enough to be listening to programming podcasts can read faster than the podcaster can speak. * Producing an engaging podcast takes more effort than writing an article. After all, you wouldn't want someone to just read out an article to you, would you? We expect more than just words from audio. A podcast would have to be scripted carefully to make sure it's engaging. * Most geeks are excellent writers, but boring speakers. * Text is searchable, audio (as of now) is not. How much metadata can you tack on to an audio clip, anyway? * You can skim through text to see whether the content is worth reading or not. Skimming through audio is not that easy. * Text allows more anonymity than audio. It's not that people don't like podcasts. Audio is just too inconvenient a medium for most people.