Recycle your old posts using oik-batchmove’s Scheduled republish facility.
With oik-batchmove admin users have the option of setting up a republishing schedule whereby posts that were published a long time ago can be rescheduled for future publication.
Screen shots
oik-batchmove Scheduled republish
Instructions
Install and activate the oik-batchmove plugin
Visit oik options > Scheduled republish
Define your republishing schedule
Activate the scheduled republishing
FAQ
Why do this?
That’s up to you.
Will Google complain?
That’s up to Google.
Will all posts be rescheduled?
If you want to prevent certain posts from being rescheduled install and activate oik-fields.
This will create a “Do not reschedule” checkbox that you can select to prevent the post from being rescheduled.
Alternatively, if you find a post that you don’t want to be rescheduled then you can set its publication date to a date before the earliest date that will be rescheduled.
A future version of the oik-batchmove plugin will enable mass setting/resetting of this flag.