There has been a little confusion over keeping, deleting social media pages in the event you want deactivate.
(Meaning you dont want to give up a page, but dont want it live either)
For simplicity I’ve included the options and a suggestion for Twitter

Facebook:
Personal accounts – can be deactivated and reactivated later (pay attention to prompts instructions when deactivating)
Business / Fan pages – can only be deleted – with no reactivation
Business / Fan pages – will delete if your only admin (personal profile) is deleted / canceled
                                         –  as long as it has 1 admin it will stay live.
(takeaway: protect your business page by having more than 1 admin)
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Twitter:
Deactivation:
Deactivating your account permanently removes your profile and information from Twitter
Before you deactivate your account, you should know:

Notes from Twitter:
– We only retain your user data for 30 days from the date of deactivation. After 30 days, your information will be permanently deleted
– You may reactivate your account at any time during these 30 days by logging in

Twitter – What you can do? (if you want to temporary de-activate the page)
–  You can keep the page, but change our username and profile name at any time
– this doesn’t hide it but  will keep the brand more as anonymous ( would also need to remove graphic branding)
– there IS though a chance that we won’t be able to get our username back  – (if someone else claims it, as Twitter checks for availability)