Multiple paper submission deadline extension (three times in few days) Important Announcement – Paper Submission Deadline Extension
The paper submission deadline has been extended to May 25, 2015 June 1, 2015.

This is the third extension of the deadline for the meeting where I have submitted my paper.

To May 1, 2015 May 18, 2015.
To May 18, 2015 May 25, 2015.
And now, to May 25, 2015 June 1, 2015.

I do not know what think. I have submitted the paper on the afternoon of May 18, 2015. That evening I saw the second extension (like Cinderella, not at midnight but close).
Now I have seen another extension, and I am concerned because I have worked very hard in this project.
The question is: there is a concrete risk that the conference could have had a few submissions and could be canceled?
Typically, I have seen two cases of deadline extension:


Some venues have a "customary" extension, which always happens, and thus all regulars know that the de facto deadline is slightly later than the initially stated deadline.
The other main case of extension is when a venue wants a few more submissions and is hoping an extension can drum them up.


Multiple deadline extensions sounds to me like desperation, and you might well be looking at an event that will either be cancelled or accept a lot of trash.  Unfortunately, there's not much you can do about it right other than withdraw your paper if you are nervous, which might not help you much either.