THE PROBLEM is exemplified by searching on 'miami'. You'd expect art deco archirecture, beaches, charm, nightlife. In fact the search response photos are mainly of planes taking off - I mean HUNDREDS of photos of planes taking off. (*) Most are from just one or two galleries. Similarly, a search on 'sport' gives hundreds of dirt-bike photos. In both cases a reasonable person might think that more-relevant results have been crowded out.
THE SOLUTION: Of course the solution would be to permit only one photo per gallery from a keyword / country match to filter through to the response group.
Just a thought. If there's such a thing as a beef from a very satisfied user, then this is it.
James
(*) You'd have thought that someone who wanted to see photos of planes would search on 'planes', but if you do you actually get fewer planes than if you search on 'miami'.