Pixelpipe will do that for you plus a whole lot more. Basically you can set it to automatically upload any pic taken with the camera to almost any cloud service there is (including picasa and dropbox). You can also tell it to only use wifi.

Update: I've gotten Pixelpipe to work with the Stock Camera App. Now every single picture I take with my Droid's camera is automatically uploaded to Picasa & Dropbox through Pixelpip. You can set it up to upload to any number of services. Here's how to get it set up:

1. Go into Pixelpipe
2. Go to Settings
3. Turn on "Enable auto upload for camera", and "Start uploads at once" (I have also chosen to turn off prompts and warnings)
4. Go into Add or Edit Pipes and set up which ever service you want to auto upload to.
5. Go into the settings for that pipe and make sure that the default for new uploads is "Send". (I don't know if this actually has to be chosen, I don't think so, but I haven't tested it. I just checked it off to be safe.)
6. Take a picture and it will upload to the "Pipes" you set up.

I tried it with Camera360 and it worked once but another time it didn't. Buggy. Don't know why.

Pixelpipe will do that for you plus a whole lot more. Basically you can set it to automatically upload any pic taken with the camera to almost any cloud service there is (including picasa and dropbox). You can also tell it to only use wifi.