xtopolis

Yes, that was the one I was looking for; thanks zanus. Also, I remember someone said they were writing an Ajax Live Chat tutorial (using sockets).. so that would be another suggestion.

Bitwise user permissions. I've saw a post in reply to a topic that had an example, but couldn't find it again (searched: bitwise).. But it would be nice to see a small implementation of user permissions for actions using a bitwise function check etc.

Relational database theory and best practices. I've read subjects on normalization, using lookup tables, pk/fk ideas.. etc.. But some of it's not easily understandable, or the reasons are not clear. For instance, Barand's tutorial about Data Joins was good, I realized I should use them, and how they can be applied.. but I didn't quite grasp why the tables were separated as such. Also, on the same topic, better ways of getting a result from joined tables to display in HTML output through php loops. How to properly join the tables is the main part; the outputting of the data, I can't think of a complicated example at this moment.