For a paid plug for SharePoint it isn’t bad. (The Trend Point) Covers resources for new users and those who have discovered they need something in addition to SharePoint (second day users).
The poor performance of SharePoint on findability opens up a robust after-market for topic map products. It is by no means the only or even poorest content product that could benefit from the addition of topic maps. It is one of the more widely used ones and hence there is more commercial opportunity available.
I know that Networked Planet offers topic map based remedies for Sharepoint. Others?
PS: I have no explanation for the odd titling of the original post or the rather odd clustering of links in the article. Try them and you will see what I mean.