1) Are these readers high or low 2) Opera and Chrome, for two 3) Recreational shoppers 4) Tools for web surfers 5) Web access programs 
are creatures that mostly eat leaves, like Giraffe.
Organisms that feed by scraping thin layers of living organisms from the surface of the substratum (eg., periwinkles feeding on rock-surface diatom films; urchins scraping a thin, filmy sponge colony from a rock)