We use it from some of our sites, but not for all of them. I think it is good for the larger sites, for simpler ones we dont consider is worth of our time. But it may change, we are using it just few weeks...
Google webamster tools really has a lot to offer especially in monitoring your site index status, crawling speed and rate, statistics gather from your site and a lot more!
A lot more as it will show you who's linking to you, if you want to see which pages on your site get the most links? Which keyword searches drive the most traffic? etc
Thanks for that link Dirky.
I registered my site. Nice to see they have 145 of my pages listed.
Not much other information though.
Hopefully that will improve over time.