The Streaks connectivity is as good as you would expect for a device of this nature. It has Wi-Fi and Bluetooth, as does pretty much every other smartphone. The only real annoyance is Dell's decision to use a propriatory connection instead of micro USB, which is now becoming the standard.
This means, there will likely be a time you'll be away from your home and your cable with no method of connecting your Streak to a power source or a friend's computer.
With the 2.2 upgrade also came a Dell Sync app for your computer. When set up, this synchronises and enables you to back up your device to your PC.
Once set up on your PC, it will allow you to sync certain folders from your PC to your Streak, be they for photos, video or otherwise.
The installation on our Windows 7 PC took around 15 minutes, including updates and reboots, and then another five minutes to check what's on your device. After that, it's very easy to use.
It would seem to be a reasonably simple way to make sure you don't lose any important photos you take each day. According to the device's Settings, this can be done over Wi-Fi, but we couldn't seem to get it to do this, since the PC software failed to find the device time and again.