Just a quickie while this blog lives in the templateless limbo that it is now in.
Wikis have a well earned reputation of being a quick-deployment option that is easy enough to explain to your colleagues: “It sits there, and I can edit it, and you can edit it,. and it will always be there when you need it”.
Wikis are not social tools however. They are collaborative tools. This is an important distinction, mainly because the value that social tools create comes from their inherent social components: Sharing, currency, relevance and the filters that can be built from social network data.
(Good) Social Software on the other hand will focus on the personality above all else. Who is creating this? Why did they create it? Who else should know?
The obvious killer app, on first blush at least, is to combine these two things. The truth is: many have tried and they have all more or less failed. I think the killer app is probably a lot more subtle.