The iStockphoto.com news about collections and pricing was very interesting the other day, but the best part was yet to come.
In a front page blog post, CEO Bruce Livingstone described a new element to the Best Match Sort. I talked about searching and sorting way back here – you may want to read that to review the system. “Best Match” is the default way that the search engine will return an image set from a keyword search. Basically, you search on “Christmas Tree”, and anything that matches that keyword is returned as a result. Now, imagine each image has a number from 1-100 assigned to it, and that number is assigned by mixing together how new the file is, how many views it’s had, the size of the file, and a bunch of other stuff. So, the BM takes the result from the search and orders it, so images that have a number like 1 are close to the beginning (front page) through to images with a rank of 100 (last page).
Now, I don’t know exactly how the sort works, but that’s how I imagine it. Problem is, sometimes when they’re adding and multiplying things together to get the rank, things may not work like they intended. For instance, my poor isolated tree below came online, and was doing well, selling 10 times in 5 days. Suddenly, it dropped off the face of the earth, appearing on something like page (100 images per) 35 of 36 when using Best Match. Hopefully the intention of the Best Match sort isn’t to punish images that are doing well, but with so many factors, something got messed up somewhere.

The other problem with Best Match, is that there is no notion of relevancy, whether the image is actually an appropriate example of the keyword searched for. Every image with the keyword is a valid return – the sort is based on a mishmash of data.
All that is about to change, as described here:
A long time ago we developed an algorithm to rank keywords on each file. Since then, we’ve been tracking data for every single file on iStock. Guess what? It works. Starting in mid-January we will start applying these results to BM searches. For clients it will mean more accurate, more meaningful and more relevant results. For artists it means a massive shift. The results for everyone, are going to be very, very different.
So how does this work? In my imagination, when you search on “Christmas Tree”, you are presented with a selection of results, the way it has always been. The system remembers your search term, and you go on, paging through a few (dozen) pages looking for the right image. You come upon my image above, and decide to buy it. This is essentially your vote that my Christmas tree image is a good example of the term “Christmas Tree”. That keyword then gets a point added to it, raising the ranking of “Christmas Tree” on that image, but leaving the rest, like “isolated” alone. The next time someone searches on “Christmas Tree”, my image moves further towards the front of the search, being a proven appropriate match for the term by your purchase.
What is the benefit? In the end, I see it saving the buyer’s time. There are a lot of images that validly have the keyword “Christmas Tree”, like this one:

However, if someone is solely searching on “Christmas Tree”, is this the file they want to show up, even if it has high downloads, is new, etc… ? Probably not. So, this shifts back in the search for “Christmas Tree”, because it’s ranking on that term is low. It probably got bought on “senior woman Christmas”, so those would have higher rankings.
I think this is a neat development. We’ve been asking for this for a while. It’s sort of a self regulating spam filter. People can spam “business” onto whatever image they want, but if its ranking never improves with that term, it sliiiiiiides to the back.
So Best Match really does have an element of “Best” now, as determined by you, the buyer. This is supposed to phase in slowly over the next couple of weeks. Keep an eye out.