Today I discovered Google's Picasa destroys your photos.
Sure, Picasa is a free service and so you can't really complain, but I think you have to know about the alterations to your precious files before you rely on Google's free service too heavily.
What did I do:
I have a series of professional PR photos. I also have a free Gmail account and I noticed it's possible to store your photo's on Google's free photo service. I wanted to test the integrity of this service so before I uploaded my files I made a MD5 / SHA1 hashlist of all files.
After uploading my photos to Picasa, I decided to download them again to my PC. Then I made a hashlist again, this time of the downloaded files.
Unfortunately, the MD5 / SHA1 hashes where totally different. Picasa resized all my uploaded photos (3456 x 2304 px photos have been resized to 1600 x 1067 px photos) and also the filesize of the photos was different (1,8 MB photos have been changed to 0,234 MB photos etc.).
Conclusion:
Once you have uploaded your precious photos to Picasa, it's simply impossible to get them back in their original state. If you don't have a backup, you're in big problems ! Because of this it's definatly not a good idea to store your professional photo series on Picasa.
Update February 22 2009
It seems Picasa is even worse, take a look at nr. 11 of the terms of service:
11.1 You retain copyright and any other rights you already hold in Content which you submit, post or display on or through, the Services. By submitting, posting or displaying the content you give Google a perpetual, irrevocable, worldwide, royalty-free, and non-exclusive licence to reproduce, adapt, modify, translate, publish, publicly perform, publicly display and distribute any Content which you submit, post or display on or through, the Services. This licence is for the sole purpose of enabling Google to display, distribute and promote the Services and may be revoked for certain Services as defined in the Additional Terms of those Services.
11.2 You agree that this licence includes a right for Google to make such Content available to other companies, organizations or individuals with whom Google has relationships for the provision of syndicated services, and to use such Content in connection with the provision of those services.
11.3 You understand that Google, in performing the required technical steps to provide the Services to our users, may (a) transmit or distribute your Content over various public networks and in various media; and (b) make such changes to your Content as are necessary to conform and adapt that Content to the technical requirements of connecting networks, devices, services or media. You agree that this licence shall permit Google to take these actions.
Wow, if you upload a photo to Picasa they can do whatever they want to do with it. Isn't this the worst case scenario for your professional photos ?
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