Rainsford feels wary of Zaroff; he doesn't trust him, and needs to escape the island.
It keeps them on edge, and makes them cave into whatever you are persuading them to do/say/buy etc.
A filtering service could save the newspaper industry by allowing consumers to filter out the content they are not interested in.
The author says that there is SO much content online it is impossible to read it all. By creating filtering services that allow consumers to choose their content based on interests, the newspaper industry could be saved. The author says there is a demand for publishing based on an individual's preferences.
The author compares this to editing in writing -- a filtering service is just editing content.
A predator is something that hunts prey (the prey being meat), and a carnivore is something that eats meat. So, their similarities are that they both consume meat. :D I hope I helped!
He had social achievements to showcase. hope this helps.
