This should explain all the 2x events lately. Yes, they're trying to get people back in the game.
Here is a rough estimate of Nexon's traffic, provided by quantcast.
Comparing the beginning and end of the graph (which are April and February, respectively), Nexon lost customers this year. While it doesn't seem like much on the graph, the scale is by the 50ks, which means that it would have been 50k customers less that Nexon can cater to. While this shouldn't be a surprise with anyone, what with the recent reveals of just how bad Nexon's security is, it also shows that with the recent events, Nexon is desperate to bring those numbers up and higher, more than ever.
With an expected decline in May, Maple's userbase could drop to the 40ks. Or less. And who knows how many people will return in the summer?
Some fun, but invariably inaccurate random statistics:
Props to @Fiel who showed me the website weeks ago.