On 16th of December, 2011 I posted a article about my 500th Sale. Now it is early 2013. It takes about 14 months for reach 1000th download with this one-
I'm uploading in this site from later 2009, but actively from mid of 2010 as the rejection rate was very high in early uploading, I could submit only 2-5 image per week. Today I've found that my acceptance rate is almost 80%. Though The sale volume in Dreamstime, in my opinion, doesn't increase very much with the increase of portfolio size, download of higher level image may compensate in total earning. Three of my images have reached in level 5 and Nine of them are in level four.
I know selling only isolated images is not the right choice. To increase sale volume I should upload varieties of photos with different compositions and subject matters. But still I'm learning. I hope downloading of my next 500 images would not take so much time.