Click the red RSS Feed icons to open up a feed on a supportive browser or Feed Reader (Feedly, Digg, StumbleUpon). The red Microphone Feed icons are Podcasts, they also open in your supportive browser or Feed Reader. The green RSS Feed icons are Webslices (Microsoft Internet Explorer via Windows computers only.). The blue RSS Feed icons are Webchunks (Apple Safari via Apple Macs & iMacs only.).
Same as Slices, only Chunks are for Apple computers.