Ah -- another link-building tool. Vanilla Coke reviews Wordtracker's Link Builder, reminding marketers who practice search engine optimization that they need links. Period. The gray areas include anchor text, quality, volume, and other features, but when it comes down to basics without links, indexed pages are basically invisible in search results. So Coke defines the tool, describes its uses, and provides screen shots to help marketers verify they're on the right track.