Powerful and (almost) banner-free online encyclopedia.
Hosted on fast server technology.
With more than 900.000 reference articles.
Very fast search capabilities.
Be invited to use it for free
this is a technical collaboration website. it's geared towards non-googleable, hard to find technical knowledge. It also has a wiki tips section where I'm planning to put all the tips and my experiments with tikiwiki.
e.g. latest tip about "how to add abdreas style logo to tiki stylesheet!!"