I like Front Line more and more as time goes on. They get it. They put a lot of effort into making their security related materials accessible and understandable. Their newly updated website is clean, easy to navigate, and full of valuable resources. They have a good primer on security for human rights workers, and a great manual titled "Digital Security and Privacy for Human Rights Defenders".
Even their site licence is a breath of fresh air. They have a nice simple Creative Commons licence. Front Line understands that its job is protecting people not content. Try comparing their licence to the pages of unfriendly legalese found on the websites of some large NGOs.
Front Line is also making good use of internet video as these two examples released on YouTube demonstrate.
Video: Front Line - Protection of Human Rights Defenders