There was a time in year 2009-2010 when most popular use to update on daily basis and the images also use to get reviewed in daily basis.

But now it seems(although they are experimenting) that most popular do not updates soon. Sometimes they remain same for years too.
I wish that shutterstock should look at this thing and allow most popular to update on either daily or weekly basis. This will give fair chance to everyone to get in popular line.

Let me know what you ppl think about it.