Flickr and Picasso are two of the most popular names when it comes to sharing photos online. The significant difference between these two is the company that is behind each respective site. Google backs Picasso, and Yahoo supports Flickr. Picasso has a one gigabyte limit to the files that you can keep, while Flickr offers you unlimited storage. You may not be able to access files that are beyond the 200 most recent. They are not obliterated, and you may open files, though if you are a subscriber to their plan. Picasa only has one drawback, that is 20MB less for each photo. Videos, on the other hand, do not demonstrate any restrictions. With Flickr, each photo and video cannot be more than 10MB and 150MB. Videos should not surpass 90 seconds. Overall, Picasso is more comfortable to secure.