Lord McAlpine, who announced he was dropping defamation claims against Twitter users with less than 500 followers, said he wanted to draw the "unfortunate episode" to a close.
He has written to those tweeters and asked them to make a voluntary donation of £25 to the BBC's Children In Need as soon as possible.
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The actress said film-makers doubted if she could play a straight woman in a romantic lead after speaking publicly about her sexuality.
Owen Lambert, 18, and his friends were on a university trip to Parliament when they were hit by the Westminster attacker's speeding car.
Teenage blogger Amos Yee from Singapore was jailed for posting criticisms of his government online.