There are a lot of things you can do with the search (like certain words within a certain distance of others) but I've been concentrating on getting the indexing done for now and to be honest, 99% of people just put in words (like in google) and the posts that have the most number of those words come up top.
The index has been rebuilding over the weekend and is not uptodate. I'm going to set it to refresh approximately every hour.