Hey I am sorry but I think a lot of the works you post are not yours.
DA is for posting your own art. You're not allowed to do otherwise.
I advice you to remove them or you might get reported and/or banned.
You seem to have a decent camera and a photomanipulation program, you could use them along with your artistic sense and have a gallery full of your works; and people will comment on how well you did and not some other guy.
And/Or if you like photography or any other kind of art you can watch the artist, comment, critique and other stuff...
This is not some posting site and certainly not facebook, its a site about art, atists and art admirers.
I know your new here and you might did not know any of these.
Long comment I know...
Have a nice day!