The ability to host your own content from your mobile phone opens some interesting possibilities to engage students and will allow the integration of user generated content in the education process. David Johnson from the University of Reading is working on serving portfolio data from your mobile.
Some of the current limitation of this approach:
-cost of the bandwidth
The ability to proxy the users content on the Mobile Web server Gateway as well as the ability to integrate content outside of the mobile phone seem to be the main points that will have to be improved for this to become a more mainstream technology. Another area of concern (or another potential use of this technology – depending on your viewpoint) is the backup of data from the mobile phone. The ability to proxy the content on the Gateway could also be used as a backup of the content that is hosted within the MWS on the mobile phone.
Some of this work is already on the way. David Johnson (see above) is currently working on some Webservice API for MWS that should allow the use of MWS served content in mashups with other content sources.