[google.com...]
Of course, the index will only be updated completely once per dance (about monthly, disregarding Fresh). With ht://dig or equivalent you can update the index whenever you want.
Once you have it all set up it is great. The issues are that is has to be compiled on the server. Many web hosts won't compile programs on their server. I was lucky with my host. He compiled it and set it up for me.
It is pretty much fully customisable. I have it set so that it re-indexes the site every night. If I upload pages during the day, they will be in the index the next day.
If you have someone who can set it up for you then go for it. Otherwise be prepared to spend a day working out all the options to get it going.
Nick.
Namazu [namazu.org] looks okay.