"He continued to contact them, they said, in part through the use of hashtags he knew them to be involved with." Let me get this straight – imagine two people, Alex and Bob, who are both comics fans. Alex doesn't like Bob and has blocked him on Twitter. Now Bob tweets something like "I like Marvel #comics". Can you seriously say that he is "harassing" Alex because Alex is specifically searching for Tweets with that hashtag and sees Bob's Tweet?
In my opinion, people wasting the court's time with such cases should be fined a hefty amount.