Hi guyz, I am going to ask very technical question from SEO point of view. I have two domain, One is live and the other one is testing, I have blocked sub-domain through robots.txt. Last time when I makes lots of changes in my sub-domain for checking purpose, then I have converted that domain into live domain. Is effect ranking??? I hope you understand....
You should not blocked your subdomain. You should use 301 redirection. And yes, Ranking would be effected.
It should have zero effect. The "main" domain and "sub" domain will both rank separately and changes to either of them will not impact on the other. That being said, any changes to the content and configuration of your "main" domain can potentially impact on ranking so make notes about what you change, log when you made them, and then monitor over the coming weeks and months to see if there is a positive, negative or neutral impact on your pagerank / visitor engagement.
No you should not block your sub domain. As like raj said you should redirect it to your main site. More over you will lose the backlinks which you have been built for sub domain. This would definitely cause some defect in your ranking.
The issue of whether to use a subdomain or a subdirectory in relation to your website’s structure doesn’t have a cut-and-dried, perfect answer. Although some good general guidelines exist as to when one might find a subdomain more useful than a subdirectory, or vice versa, situations always arise which turn the usual advice on its head.
No change at all. And use 301 redirection, do not block anything!! And just to say, don't make changes too often!
Do a 301 to make sure all your link juice gets redirected back to your page. It's a huge waste if you simply blocked it from spiders.