If you're a longtime Dropbox user on Android, you've probably bemoaned the lack of SD card support. What good is having gobs of cloud storage if you can't use all the free space you have on your own phone? At long last, though, Dropbox has released an Android update that lets you export files directly to external storage. It's a simple addition, but it's potentially a big deal -- you no longer have to worry about downloading that multi-gigabyte video so long as you have a card with enough room. The upgrade is already available in Google Play, so go and grab it if you're eager to fill up your device.