you can develop a personal messaging system...
where registered users can send and receive messages to and from other registered users...

I am working on a website which displays sports data. This site will use XML data(SportsML to be precise) provided by a third party(sports stats data vendor). Do I need to store this data in my database or shall I display it straight from vendors database?
Also if anybody has already worked on such assignments, please let me know how to deal with this sort of data(SportsML), i mean parsing and all...
Your help is greatly appreciated....