“ under a plain reading of the statute it is clear that retweeting falls within the confines of Section 230’s immunity [...] Unsurprisingly, Reid’s attorneys signaled that she intended to argue just that in response to the complaint filed against her. Faced with the prospect of this hurdle, the plaintiff promptly dropped Reid’s retweet cause of action from the suit, although she has maintained her claims against Reid for allegedly false statements made after the retweet.“