Law Ratchet is a free, searchable aggregator of legal news and blog posts. At present, there is both a Law Ratchet website and an iPad app (displays well and is easy to edit). The FAQs indicate that the developers are working on adding offline access and expanding to other platforms (like Android phones).
You can customize Law Ratchet’s 40+ legal news categories through its EDIT feature. Categories include: trending topics, top 25 blogs, law school, and the legal industry. There are also subject categories such as international, policy and politics, corporate law, commercial law, immigration law, and law and technology. In some cases, Law Ratchet is reproducing blog posts in full. In other cases, it provides summaries of posts and directs readers to, for example, specific legal blog sites.
I think that this will be a useful source for note and paper topic development.