if nsfw
    @items = Item.all(:limit => 10, :order => [:created_at.desc])
  else
    # this also excludes all items without any tag
    items_without_nsfw = Item.all(:limit => 10, :order => [:created_at.desc], :tags => {:tagname.not => 'nsfw'}) 
    # we need to include them afterwards:
    items_without_tags = Item.all(:limit => 10, :order => [:created_at.desc], :tags => nil)
    @items = (items_without_nsfw + items_without_tags).all(:limit => 10, :order => [:created_at.desc])
  end