custom robot.txt of blogger to optimize crawler and indexing

optimize crawler and indexing on blogger ..... if you have problem to get code show this video http://www.youtube.com/watch?v=p6eH1p-9W0c part 1 video :- how to generate sitemap for blogger for google and bing part 1 url -- http://www.youtube.com/watchv=uzo4qAa... part 2 video :- blogger generated sitemap submit in google webmaster part 2 url:- http://www.youtube.com/watch?v=1c5lqV... part3 video :- sitemap submit in bing webmaster of blogger part 3 url :- http://www.youtube.com/watch?v=p6eH1p... part 4 video :- custom robot.txt of blogger to optimize crawler and indexing url:- https://www.youtube.com/watch?v=zh_ZkfmBEYM part 4 is very very... important to watch