Barriers to website use

The US Agency for Healthcare Research and Quality recently completed a very extensive literature review of studies examining the use of internet-based technologies for health care consumers. Here are the barriers that successful systems overcame and my initial thoughts in how to address them --

There are a few additional barriers listed, but I think these are the most relevant for my project. Anyway, it's these things that I keep thinking about as I test the waters with my learning circle site.