MicrostockGroup

Almost all rasterized vectors will be rejected... You must send EPS now...

you can still upload the svg files as before the last changes, and they end up priced at 8 credits (at least it was that way until last friday)

Neither do I. I stopped uploading long ago. Whatever they make on my old shots is an extra. I can't really tell about rejections since I never found out what they rejected and why. I just cash in now and then. Their esoteric upload system (FTP never worked, HTML crashes with more than 3 images in a row) takes too much time. The moment they go under 5% of my total income, I'll kiss them buhbye with a French kiss. Paris ne vaut pas une mess. 

Miklav, I can relate to what your topic here. However, what I cannot understand is why you insist on submitting what Fotolia rejects. You know what they want, so what's the beef?
Whatever Fotolia rejects from me are submitted to the other Big6 and they approve them. It works for me and it's fine.
But another thing that works for me about Fotolia is that although I have a small portfolio and is a new contributor (not even a year yet), my approval with Fotolia is pretty much as good for the other Big 6, if not better. And the bonus to it all is that Fotolia is the only site that is selling my images on a regular basis. Sometimes, my new images get sold within 24 hours.
Other submitters have the same good fortune with Fotolia , and for this, I cannot find fault with Fotolia.

They can reject all they don't need from me, I don't mind.
Simply because what they need from me, THEY SELL FOR ME.
That is something I cannot say the same thing for the other Big 6 which I have been contributor for much longer time than Fotolia.

As someone else pointed out a long time ago, each one of us has a site that likes us. So, we keep uploading to the one who does. For me? It's Fotolia.

Yes, Fotolia rejects most of my images (I think my acceptance ratio there is less than 35%).....

BUT...

1. The low acceptance ratio doesn't negatively impact me in the search engine or in any other way.

2. Acceptance of my images gives me a good gage for if it will be accepted at other agencies, thus I like to upload to FT first.

3. FT has a fairly quick review process (usually less than 36 hours)

My Experience with What FT Accepts:

1. Unique Landscapes  (West Coast landscapes have done well for me)

2.  Any image with a well executed shallow depth of field (especially those with an object in strong focus in the foreground and then some type of related object or people blurred in the background)

3.  Just FYI my portfolio is mostly a collection of animals (strong focus on dog & horse photography).  So, I don't believe they won't accept anything but people images. - I've had surprisingly good success, especially with my horse portraits.)

Slowly but surely I'm gaining sales at FT, its definitely not my highest preforming portfolio, but its a strong 3rd place.