"Poor Lighting--Poor or uneven lighting, or shadows. White balance may be incorrect."

Is this because I am using CPL filter for my outdoor shots?

Recently I cannot upload anything due to timeouts. What's wrong?

@Paulie: Judging by my IS portfolio is wrong. Building portfolio there will be long and painful even if I got 10 different categories it would take months to have many pictures there :-)

I think I sow it on one website but I forgot which one.

For me it must be Nostradamus cause I probably predicts sales in next century on other sites :-)

Yes, great comments. I would only add ImageKind to the list of art selling website. They support Flickr API so It's easy for me to get pictures upload but I do not have highest resolution photos on Flickr so maybe why I am not selling much.

Thanks Tom. It is a hobby for me but I decided to try sell some of the stuff that was sitting idle on my hard drive for last 5 years. I got 100 gigs of photos to look thru :-) Some of them from time when I scanned slides :-)

Since I started last it seems like uploading my landscapes is not really working. I do want to play with model releases so I cannot photograph people. I do not know Photoshop so I cannot really do so called "concept shots".  Maybe I need to invest in lighting setup and start doing macros of objects?

Yes I can do that but why should I do the work which can be easily done by computer and give to me on stats panel. I have to click on this link, then sort by status, then pages multiple time until I will get number of files = #pages x 10. In addition you cannot tell the difference between rejected and deleted files. Both are in one bucket here. Same story for pending files, lot of clicks and manual counting.

I just started. I went thru my pictures, selected around 500 and now I am trying to upload them for last 4 weeks. I just want to have statistics what sells and what is not so I can shoot more suitable photos in present time.

Most of the time I got Instructions page instead of My Account page. There is no error so I guess my credentials are correct. Sometimes I can login after few attempts. No error messages but I cannot see my portfolio.

Weird, it's only option on their Software Downloads page (http://www.istockphoto.com/downloads.php)

Thanks. I will try DeepMeta

I am still infant of microstock photography :-) Most of all I cooled down, it's going to be long an painful process. My first goal to have 100+ pictures on every site will take more than I expected. I could only reach this mark on SS and 123RF. Average approval rate is around 30% so I have to upload 500 photos to each site. How long it would take with site without FTP support or with daily limits :-)

Couple lessons learned:
1. Never upload full sized images. It's just to easy to get rejections. It's kind of difficult cause probably I have to resize photos to 1,2,3 and 4 megapixels for different sites.
2. Small batches. Even if there are no limits it seems that on most sites reviewer gets whole batch from one person instead of random photos which would be more fair.
3. Different subjects. Since I do not know what sells on particular website I put same batch on every one. My first was just a bunch of landscapes from my trip. Sometimes they are rejected for similarity.

102 pictures sold (101 on SS and 1 on 123RF). Some site got quite high acceptance rates but completely no sales. My best sellers is so far shot of lighthhouse, christmas ornaments, street shot from Manhattan, Crater Lake view and Machu Picchu shot. Landscapes are what I mostly do so it was probably majority of uploaded photos.

Rejected from SX, still waiting for approval at LO and SV.