MATCH (person:Person {id:"21990232559429"})-[:KNOWS]-(:Person)<-[:HAS_CREATOR]-(post:Post)-[:HAS_TAG]->(tag:Tag)
WHERE post.creationDate >= 1335830400000 AND post.creationDate < 1345830400000
OPTIONAL MATCH (tag)<-[:HAS_TAG]-(oldPost:Post)-[:HAS_CREATOR]->(:Person)-[:KNOWS]-(person)
WHERE oldPost.creationDate < 1335830400000
WITH tag, post, length(collect(oldPost)) AS oldPostCount
WHERE oldPostCount=0
RETURN
  tag.name AS tagName,
  length(collect(post)) AS postCount
ORDER BY postCount DESC, tagName ASC
LIMIT 10;