I do not know how many of you know what this is, but I will say anyway.
Ripping is taking a picture editting it a little bit, and claiming it as your own. (This also includes removing the artist's copyright. --Program)
In the USA, this is like Plagirism, which is illegal. In the graphic arts community, this is frowned upon.
This is a verbal warning to everyone.
I recommend the forum mods will take considerable action if this happens.
Note: This does not applying to renders, but you should say where you got it from.
And if you do this, at least give the dude who made it some credits. (Bibliography if you want)