Yahoo may be doing a lot more in terms of mobile before long. Or at least telling us more about its current cell phone-related efforts. Either way, it launched the Yahoo Mobile Blog this week for the sake of keeping everyone up to date. Irv Henderson , who's Yahoo's Vice President of Global Mobile Products, wrote the introductory blog post, and explained, "You can expect to learn about new product launches and enhancements, quick tips and tricks, our take on market trends,