I use it quite often now that it's a lot more functional than it was a mere couple months ago.
If I'm searching for a specific type of app, it's much faster and easier to search, locate, and decide, from the desktop. Find what I'm looking for, clicky install, and done.
I also find it very handy and convenient when I read a review on an app that looks interesting and there's a market link in the review. Just click the link, select install, done. No need to grab the phone and go looking for the app.