When my son was born 7 years ago we would take a lot of photos. At that time Google Picasa was new and I was leery of storing my photos on a remote server. As such I had installed Gallery to manage our photo collection. You can see the albums we have put up by going to gallery3. This year when I arrived at my in-laws I realised that I had not taken any of the photos off of either of our cameras since last Christmas vacation. I was not looking forward to having to upload them all again and label them as I had done in the past.
Now over the last year (since I purchased a smart phone (Android)) I have been uploading more photos to on-line photo sharing sites then I had ever thought of doing. As such I thought I would look into Google Picasa again. I had used it last Christmas to quickly sort our pictures into those of my son and those of my daughter then I uploaded them all to my home server. This time however I tagged the photos and had Picasa place them into folders named as year-month and then uploaded them all into the Google cloud. This has made dealing wit a years worth of photos between two cameras (have to dealt with the cell phones yet) very easy. I currently get 20G from google so will likely need to pull off old photos when I near that limit (at this point with Gallery we have 32G! of photos not including the resizes and thumbnails after 7 years).
Get eyefi cards for your cameras and auto upload to Picasa. Never worry about taking pictures off your cameras again.
What is an eyefi card?