Feaured Image creating a new post

Hi,
I have installed nextgen gallery plugin on the site venditera.in .
While posting i am attaching a featured image in select next gen featured image settings .

But after i post and search in google , Google is indexing and showing the featured image as a separate post with attachment id .
when you do
site:venditera.in . I am getting all attachments ids and featured images as a separate posts .

I dont want them to be shown as separate posts . Please help

http://wordpress.org/plugins/nextgen-gallery/