If you are referring to a meme then the answer would be B. This is because memes are pictures that spread throughout the internet. The answer choice A would be a username. I was not able to find anything on the word mem that relates to computers but I did learn that it is the 13th letter of the Hebrew alphabet.
It depends on how far apart the 2 objects are from each other
Social bookmarking is a way for people to store, organize, search, and manage “bookmarks” of web pages. Users save links to web pages that they like or want to share, using a social bookmarking site to store these links. These bookmarks are usually public, and can be viewed by other members of the site where they are stored. Examples of social bookmarking sites include del.icio.us and digg.com .
Most social bookmark services are organized by users applying “tags” or keywords to content on a Web site. This means that other users can view bookmarks that are associated with a chosen tag, and see information about the number of users who have bookmarked them. In many cases, users can also comment or vote on bookmarked items.
Social bookmarking is also interchangeably sometimes referred to as folksonomy, collaborative tagging, social classification, social indexing, and social tagging. “Folksonomy” is a combination of the words folk and taxonomy, hence a folksonomy is a taxonomy generated by a person or group of people
