no Link to the other Site - Link nach drüben nicht möglich

As far as I know, they do this with any link that points to something outside of Ipernity. (This doesn’t mean that I’m happy with it.)

the second link works for me....
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Seen in robbb home page (?)

Erm … I just noticed that you had written “which does not link to anything”, which makes me wonder because actually both links do link to the same thing. The two additional attributes are only there to tell browsers to open up a new window (which is actually nonsense) and to tell search engine spiders not to transfer “link value” from Ipernity to the link target (which is somewhat childish).

You’ll have to add an “http://” prefix though. :)