At Bilderdomino group and game there can be "broken links" and some "pieces" missing in the past.
There can be various reasons for that:
1) Member has left the group and/or ipernity, and the group contributions have become removed as well.
2) Member has decided to "reuse" the image later on.
3) Member have had 'Club' subscription earlier, which has then expired and turned to 'Guest' account limited to 100 images. Therefore some older contributions have "disappeared".
4) Member has removed the contribution and/or image deliberately for various reasons. For example member has decided to remove image that may infringe copyright
(e.g. image of lit Eiffel tower). There can be also some personal reason. For example some of us seem to have a habit to keep the total number of images within certain limits, and that is totally okay.
At Bilderdomino we accept all these, and we just have to let them go.
Besides, many of us does not often "look back" anyway. The game in the past stays within the past. So, keep on playing and have fun! =)