I've been using EE since they gave away 100 licenses to those who had an existing site on another CMS and wanted a chance to try something new. These days, EE powers my main site -- which has grown a from small hobby to a very large hobby indeed -- as well as a small personal site. Both in terms of EE and web development in general I would say I know just enough to be dangerous. Somehow, through force of will and with a lot of help, I recently managed to upgrade from EE 1 to EE 2, including migrating my Galleries.