Simple easy to set up and use. Lots of iPhone and iPad apps can be set up to use Flickr. Search for iTechGeezer on Flickr to see my photos. More each day.
I recently purchased a Eye-Fi 8GB Wi-Fi SD card. So small, so cool! I put it into my Nikon camera and it now stores and uploads my pictures and video to my Flickr account and also Geotags them. Full review soon on my web site: iTechGeezer
More info at: Eye-Fi website