Pictures in Facebook vs GPlus vs Blogger

I just scanned envelope No 430 from a collection of 6000 cabinet card photos.

Examples:

The photos are kept at the Karlstads Kommunarkiv. They were collected by CE Nygren in Karlstad and all are with names and often with information about the person. This is what I know quite uncommon since many photos of this kind are lacking identity.

The project is well under ways and scanning is made by people at the archives but also by external voluntaries like myself. Today we have scanned about 1000 pictures and we are preparing to put them online in our searchable database at http://www.wermlandsbilder

I just found out some disturbing facts:
IPTC-information for each scanned picture which has been part of the job is stripped by Facebook when you publish on Facebook. And also when you add a picture into Blogger (just found out).

BUT another reason to use GPlus - IPTC is kept intact and the main information is used besides the picture:

 
You have to remember that some programs does strip the IPTC when you make adjustments or conversions. Test your program when you convert like we do from TIFF to JPG before publishing.