Orange County-based heatmap software developer CrazyEgg has acquired Hello Bar, a developer of customizable, web toolbars which help encourage actions from web site visitors. Financial terms of the buy were not disclosed. According to TechCrunch, the buy included only the Hello Bar product, and not its team. CrazyEgg, which is based in La Mirada, has quietly built a healthy following providing website analytics tools, centered around creating a visual "heat map" of how visitors are using and visiting web pages. Those tools are used by web page designers to figure out how to better engage users and tweak their web designs.