This week I am working on making xcart modifications for a friends website.
He will be launching an online store, www.hdmispot.com and I working on realizing changes for him on this site
up at my subdomain, xcartgold.winwinhost.com.
Basically integrated a brand new template, and then started making custom mods to it for look and feel.
I do have to code in some custom display functionality on a php/smarty level.
xcart is built well, using MVC principles and smarty for templating engine.
Webmaster mode is an interesting way of editing text across the site.