Although the (english) Wiki is far from complete, this looks like a good idea, as there is already a lot of information available there, which is not available elsewhere.
Should simutrans.com have a wiki link in a prominent position? ANd on sf there is also a wiki link.
If you are speaking about www.simutrans.com page: no. I would prefer no. Why? Simutrans portal is just a page for a visitor to choose their language and find stuffs in their own language.
I have said (and I will accomplish it) that each language will received an intro page with:
1) Simutrans description with Screenshots (similar to sourceforge's and pt.simutrans.com (http://pt.simutrans.com))
2) Link pointing to a download page (we'll discuss what's the best one for it)
3) important links of community (e.g. Wiki, respective language board etc).
Please: http://forum.simutrans.com/index.php?topic=624.msg6386#msg6386
I'm about to write a project of what this intro page will contain.
So, I don't think we need a 3nd link in start screen or even in Simutrans portal.
Thanks for giving us ideas, especially Frank. :D