The site is fairly easy to use, at least with firefox browser. Just a few things that could be improved:
1. in the project section, it would be neat to know before following a link whether there is a video or a simple text page at the other end. Reason being of the capped monthly allowance of broadband providers (I almost went over it when surfing through the projects' pages for sth I needed, and for which a simple text page would have been enough)
2. About the forum: it looks like a jungle because it is not obvious at first that it may be worth looking through previous threads using the "Search" facility on top, instead of launching a new thread which will overlap with others. It may be useful to have a brief intro to the forum making this explicit to all users, and suggest also that concise headers are handier than "expanded-explanatory-narrative" ones.
Thanks for asking and responding to users' feedback!