I just leave IS two years ago and come back recently. Which quite shock me is the approval of photo is quick... actually quicker than i think, or expected. Anytime, i submit those photos for reviewing, average 1 mins they approve my photos and the acceptance current i got is 93%! around 100 photos.

That's impossible compare to two year before and even make me think a robot is approving my photos.

So, what's going on here? is this a good thing or a quite bad thing.
Previously i treat IS as the highest quality and most difficulty one, even than SS and fotolia, but now it quite like small agency and accept anything...

A lot of contributors stopped uploading so they now have take what they can get. There have been a few signs of desperation  lately. The lax reviews being one of them.

They now accept anything other than for property rights issues and poor captions on editorial.

Shutterstock, Dreamstime, Alamy, 123RF� do the same.

The only site from which I get rejections (most of the time inconsistent) is Adobe/Fotolia.

It is far the time when there were tons of rejection for "noise", "white balance", etc.

It's a bad thing. A lot of their accepted images over the past couple of years are shockingly bad. So are a lot of the earnings nowadays, but the low-payers don't get to see only the poor files.
That was an incredible achievement getting 7 files rejected, unless for needing releases.

i agree and i also treat this as a very bad thing.
i don't know if there is big difference between ss and is on the aspect of incoming, but so far i think the incoming from is (not exclusive) is far behind even with some middle tier or low tier agency. Even they get a lots of photos on their website, how they could not control the quality of those photos? i means, as long as they reach the number they want, what next? delete pro-folio and kick out some photographer?