Nice infographic from the WSJ for their article on messaging apps – check it out here.  They say that on average few app developers make much money, which was a surprise to me.  Every startup I’ve worked with / talked to over the last 2 years routinely complains about a shortage of talent – mobile app development is particularly problematic because you have to develop for multiple platforms (iOS, Android, and to a lesser extent Windows, and Blackberry) you’re not just designing one web page accessible by any device.