Remote Locating/locking/wipingI imagine nothing could be worse than losing your smart phone, luckily there are a few ways to try and recover it.
Android: Android has many ways to recover it after you lost it, each offers its own advantages. Some free, some paid.
With 2.2 Froyo you have remote wiping built into Android. The only thing is that you must have Exchange set up, and only an administrator can remote wipe it. Really only an option for you if your Android phone is through your work.
http://preyproject.com/blog/2010/01/prey-arrives-on-mobiles-android-version-available - Free. Well known for their PC tracking software, Prey is now on the Android. Simply send a specific SMS to your android phone to activate it (you can set it up in the app) and another to deactivate it.
https://www.mylookout.com/ - Free or Premium version for $30/yr. Not only does it offer remote finding through the website, but also has an antivirus program. The Premium features include the ability to lock your phone until you find it or wipe it clean, as well as even more goodies.
http://lifehacker.com/5611003/build-a-find-my-iphone-clone-for-android - Free if you have Tasker already, otherwise $5-7.
https://www.wavesecure.com/wavesecure/android.aspx - $19.90/yr. You can track your phone, lock it, and back up/wipe the data
http://us.norton.com/mobile-security - Free for now. Same as above, but by Norton instead of McAfee
https://www.mobiledefense.com/ - Free (waitlisted). Before getting waitlisted, it was the app to go. Remote location, wiping, locking, and backup. Add yourself now and you might get lucky to get it in the near future.