Although I am some kind of a guru, and present at Wikidot for more than a year and a half, I must admit that, even if I do know much more than a year and a half before, I still easily get lost among all those new sites you create for many different things, and also, I must admit, when reading many explanations to other persons, I don't have a clue what you are talking about.
My suggestion is that all the sites and blogs that Pieter (and the others) started recently should be put in the front page, with a short explanation on what they are about and what kind of membership is required, as well as who can edit and who cannot, with the names of administrators for each site, in case that someone needs a more personal help from "the bosses" of the site. Of course, all in simple English, not only because of non-English speakers, but also because of the people who do not understand your computer science terminology. And imagine when someone (like me) is both — non English speaker AND doesn't have the slightest idea on terminology, and wants to build a site… :D There must be one main site (which would be, I assume www.wikidot.com), and other "child" sites. All sites that are dedicated to Wikidot community should have a Wikidot sites map. All of them, and the link to that map should be on the front page of all of them, so people should know where to look for if they want to go to some specific site. Also, thereshould be a clear explanation of what is Wikidot (not an add-like, but a tutorial-like) and that all those links lead to different sites that all belong to a Wikidot, as well as that a visitor can have his own site and where he can look for a help etc. so a newbie has from the very start the idea where he is and what he can expect. I am telling this from my own experience. In the first month of my staying at Wikidot, f there weren't Phil and Helmuti, I think I would have left the idea of having my own site very quickly. They were the first ones who really were keeping on and on in explaining me over and over again the things that were so obvious (for them, of course, not for me:P).
Also, I noticed that some things were duplicated or suplemented recently, for example, a wish list (that I finally know where to look for), seems to be obsolete now and now you have some wish cards with numbers that I don't have the slightest idea where to look for. Also, in this case, I am not sure if the old wish list still is on or is closed and abandoned completely.
A very important thing are sites that contain HELP and instructions on how to build site and manage Wikidot syntax. I also noticed that there are various places where many very useful instructions are scattered. When I need something to look for, I always go to How-tos, simply because I don't know where is the rest of the help pages. Sometimes in some how-to there is a link to some other site, so even if I visit other help sites, I do it by chance, and not because I know where to look. Therefore, The front page of the MAIN wikidot site should contain the links to ALL those sites that contain any kind of help, tutorial, or similar. And ofcourse, you should be able to reach all of it easily from your account page. Maybe the Wikidot sites map should have a link in the account page…
Maybe I am just a little bit lost by nature (like a pig in space :P), but I do think that Wikidot is a little bit chaotic and it needs a little bit of order… Creative caos is good, but for creative persons, but for people who should use their genious ideas, a little bit of order is a must.
I would make my own front Wikidot page and in this way, participate in the contest, but honestly, I don't know where to look and besides, I am also afraid that I am not even aware of all the things that exist at Wikidot.