I used to post through autoblogging on one of my blogs.
Now I have stopped this practice and need search engines not index all the old posts posted with autoblogging (posted until a certain date).
What is the best solution?
1. 301 redirect? how to set it up for posts until a certain date?
2. Noindex Nofollow Meta Robots tags? (again, how to set up for posts until a certain date ?)
I'd prefer making the job without installing any plugins.