is this called spamming in facebook..?

many people were asking for a movie on many fb pages..they were not getting it from anywhere..so i shared my links in the comments that they can watch over their..
Now whenever i post links to facebook first it asks me to enter capta code and when some one opens that links facebook asks everyone that this website might be a spam..and if 1 clicks on not spam button only then it opens website…?
I am not getting this why facebook is doing so..?

See original post by mack369