this is the way how upload an image…
It is nice when search engines frequently visit your site and index your content. But there are instances that you happen to have a sensitive data on your site and you don’t want the search engines to index these pages. Also there are times that you want to save your bandwidth therefore you have to exclude your images from indexing. The best way to inform the search engines which files and folders to avoid is to use robots.txt.
Robots.txt is a text file that you put on your site to tell search robots which pages you would like them not to visit. Though it is not mandatory, search engines generally obey what they are asked not to do.
Robots.txt must be placed on the main directory. It is very important that you put your robots.txt on the right location. Spiders do not search the entire site for the file named robots.txt before indexing. Instead they look for it on the main directory.
How to create Robots.txt file
The structure of robots.txt is pretty simple.
The administration area of a Web application is a favorite target of hackers and thus particularly well protected. The same goes for WordPress: when creating a blog, the system creates an administrative user with a perfectly secure password and blocks public access to the settings area with a log-in page. This is the cornerstone of its protection. Let’s dig deeper!
This article focuses on defending the administration area of WordPress, meaning all those pages in the wp-admin folder (or http://www.yourblog.com/wp-admin/) that are displayed after a user a verified. We highlighted the phrase “after a user is verified” deliberately: it should be explicitly understood that only a simple query stands in the way of an evil hacker and the powerful admin area of your whole blog. The latter is only as strong as the passwords that are generated.