[davidamcclain]

I tried two quick examples in the browser for a little test. Thinking in terms on banal clipart I use the tag "happy" and I get back a very nicely shot photo of two attractive people making out in a doorway. Hmmm. Then I try "friends" thinking I'll get something a little more office appropriate and I get a nicely cropped image of two young ladies in bikinis frolicking on a beach.

Nothing R rated or tasteless, just not the kind of thing I want to explain to my boss who's looking over my shoulder. Think I'll be sticking with http://placekitten.com/ then...

[goldins]

Interesting... playing around with similar tags and some offsets, I got those results as well as some irrelevant images (aurora borealis for "friend"). Definitely a concern when you need the placeholders to be at least somewhat relevant. Personally, I have no problem with using http://placehold.it/

[jfoucher]

Yes, this is often a problem, as people on flickr will tag their photos rather loosely...

Try and be a bit more specific in your tags, putting several separated by commas.

http://flickholdr.com/250/185/happy,office for example, might be more appropriate.

Disclaimer: I'm the developper behind flickholdr