Word popped up recently at Otaku Review that the Kadokawa-owned series Omamori Himari, a fanservice-laden comedy, is going to be removed from Crunchyroll 30 days after the series ends. The last episode airs on March 24th, so that means you have to get your Omamori-ing in by April 23rd.
Sora no Otoshimono, which is also a Kadokawa title, was removed from the site rather quietly, and reached out to Rob Pereyda, Crunchyroll's Vice President of Licensing, who commented thus:
"While I cannot reveal too many details as to the specifics of the Kadokawa Pictures deals, I can confirm that there is a window in place for the two titles. While I am not privy to their entire media strategy, I can say that the windowing of content across various forms of media has become more and more widespread recently, especially overseas, and that both rights holders and distributors ultimately come to these kinds of agreements to best ensure the future, viable production of high-quality media."
I've seen a few suggestions that these series are being taken down because of their high levels of fanservice combined with featuring high school-age kids, another victim to life after Handley, but I'd bet against that-- these contracts were signed well before Handley's sentencing, and I'd expect these 30-day deadlines were built into them.
The reason it got noticed for Omamori and not for Otoshimono is that Crunchyroll began putting notice on the series' episodes saying as much, and I'll be honest, I'm a little surprised that they didn't put them on Otoshimono before.
In any case, now you know that you need to watch your simulcasts in a timely fashion! And don't forget that each individual EPISODE of Fairy Tail gets taken down 30 days after its airing!