WMExperts have a detailed review of Live Search Mobile here.

WMExperts:

Did you ever wish you could ask your phone a question and it would give you an answer? Have you ever been out of town and had an appetite for Italian but didnt know the local restaurants? Want to catch the latest movie and would like to know where its playing? On your way home and curious what the traffic was like and didnt want to wait for the traffic updates on the Radio?

Wouldnt it be nice to have all this and more wrapped up into one application on your Windows Mobile Device? Enter Microsoft Live Search Mobile. It is a one stop shop for these and other needs.

And here are their Overall Impressions:

WMExperts:

Microsoft Live Search Mobile is a very handy application and I would rank it as an essential application for anyone with a data connection and a Windows Mobile device. While I like this application, it does have a few short comings, the biggest being the lack of onboard or online help.

While the application isnt difficult to learn on your own, it would be nice to be able to pull up legends for the traffic information, or what the difference is between Categories and Collections. It would also be nice to be able to set conditions on your route planning and add intermediate stops to the route. Even with the few nits that I have with Live Search Mobile, you have to remember that the price is right (FREE) and beggars cant be choosers.

Microsoft Live Search Mobile is a feature rich, useful application that puts a lot of information at your fingertips and while its not perfect, it is free. If you have a data connection, Live Search should be on your Windows Mobile device.