This is a nice list to have all in one place of sources for your content discovery. Many of them are sources of feeds, which you can load into MyCurator. I especially like AllTop for finding new blogs. With our new Source It tool, you can find a blog on AllTop, click on its title then use the Source It tool to load it right into your Links Sources. Also the twitter searches using Hootsuite as mentioned in this article can be set up within MyCurator using the News or Twitter menu item under Links. While some of these are for larger corporations (the author, Pawan Deshpande, is the founder of Curata, a software solution like MyCurator for larger corporations), it may trigger some ideas for sourcing content from within your own organization.
For those that are not readable as RSS, the time you save having MyCurator reading your feeds can be spent browsing some of these sites.