The power of wiki is partly in its expansiveness, the
ability to integrate lots of information. Unfortunately, a
weak (as far as I can tell) search feature hobbles
FlexWiki's ability to achieve this.
Users need to be able to discover existing information to
link to it, rather than creating additional, redundant
topics. This is very difficult to do without a full-text query
through which I can ask for, e.g., all pages containg the
word "hockey" AND the word "season".
I would suggest that, since this is already targeted to
ASP.Net, that it would be expedient to use the MS
Indexer engine that's already (probably) installed on the
server, and just build some pages to query an index
that's built by that service.