"Famed baseball manager" La Russa sued Twitter based on an impersonation account.  Many bloggers and commentators noted weaknesses underlying Mr. La Russa's claims.  (See, e.g., my CircleID post: "Tony La Russa's Legal Claims Against Twitter Look Tenuous.")  Not because of Section 230, which doesn't necessarily protect Twitter against state IP law claims or trademark claims, but because La Russa had weak (if any) trademark rights, and Twitter likely didn't violate La Russa's rights. 

Now law.com is reporting that La Russa's voluntarily dismissed his lawsuit with prejudice [pdf] in a filing which makes clear that no money changed hands.  ("No payment was made by Twitter to La Russa in exchange for this dismissal.")  I would try to come up with a good baseball analogy, but I'll leave that to those who are better versed in the sport.  A good outcome for Twitter obviously, as any cash settlement would have set a nasty precedent.