A number of studies have assessed the effects of internet-based communication tools on the physician-patient relationship (Liderman, 2003; Oh et al., 2005). Moreover, previous studies of Internet-based patient-provider communication include a randomized controlled trial (Katz et al., 2004) and four descriptive studies (Liederman & Morefield, 2003; Sittig, King, Hazelhurst, 2001; Kleiner et al., 2002; Moyer et al., 2002). These studies showed that online messaging between patients and physicians was a powerful means of communication that was well accepted by patients, but it was infrequently used by physicians. However, many of the studies suggest that there is a need for more comprehensive understanding of costs and benefits.