Joined: 09 Jul 06
21 Sep 14 10:20 pm
You can't edit your actual robots.txt file from inside webmaster tools. There is an "edit" feature inside the tester, but this is just to allow you to test what would happen if you changed your robots.txt file. (eg, edit it a bit and see if the Googlebot behaved differently.)
To save any edits you make, you'd need to be able to copy and paste that into your actual robots.txt file, which lives on your own web server.
More info here: https://support.google.com/webmasters/a ... ic=6061961
Can you tell us what you're trying to do with your robots.txt? Are you trying to block something, or allow something? As admin252 mentioned, if you want to *allow* robots there will be that setting inside your blog settings.
Keep in mind that using a hosted blog like Wordpress.com (not to be confused with Wordpress.org) does severely restrict your ability to do a lot of things with your website. This is why we don't really recommend using a hosted blog for your main money-making website.