So sales of one photo don't seem to boost the rest of your portfolio on IS.  Is that how everyone else sees it?

As far as I know, 'twere ever thus, except for one famous time when best match search was awful because they'd promoted certain people who were dreadful spammers. That only lasted a very few days.

There is still something odd about this.   The newer photo, making the sales, is one of my best sellers elsewhere.  But it's not the only one, I have others that continue to sell well.  But not at IS - the same images all died there months ago.  Just about the only one that sells at IS now is the new one, which I submitted months after the massacre of independents.

It's like all my older photos were tagged in their database, all at one time, so their sales effectively ended.  But the recently-submitted photo never got marked for death, so it has a chance. 

The test, of course, would be to submit another 'good' photo and see if it sells too.  But, I apparently can't set  any more photos as Photo+, and without that, there's no point because only my Photo+ photos made any significant sales.

I guess there's no point to this thread.  I'll never know what's really going on, and I'm done with IS unless some things change in a major way.