Finding and curating content takes a variety of forms.

Google Alerts and Google Reader (RSS) help the content come to you. Visit the Google page to learn more about those Google services.

Social bookmarking through delicious and diigo are ways for you to gather and organize resources for yourself and others, plus share those resources strategically with particular groups. With diigo you can highlight, annotate, capture and comment on content.

Going a step beyond social bookmarking to Evernote to keep a virtual filing cabinet. Evernote syncs across devices and your notes can be shared.

LiveBinders is an environment that enables you to gather and present resources. The resources may be any type of media - websites, documents, images, video.
Each LiveBinder has tabs and subtabs that present information. LiveBinders has an overview for their use in education..

Paper.li and scoop.it are content aggregators that can gather web content based on keywords, or, content you specifically add.