The mobile phone's potential as a portable powerhouse of user-generated content remains more theoretical than real. As every mobile blogging vendor has pitched me for two years, the phone is the "perfect computing device." It not only connects to the Web, but it has a built-in voice recorder, a Web cam and text entry. Most PCs boast only a few of these capabilities. Yes, indeed, as a blog entry tool, or as any kind of content posting device, the cell phone is the ideal device. End of pitch. Nice try, I think to myself.