San Francisco - Facebook is preparing to take on Twitter by adopting the messaging service's iconic hash tag symbol, The Wall Street Journal reported on Thursday.
Twitter users use "#" or pound symbols as a hash tag to indicate subjects in tweets.
The style is such an entrenched part of the Twitter language that the San Francisco-based company added a hash tag search feature to make it easy for users to find messages focused on themes or events of interest.
For example, people firing off messages at Twitter about a hurricane might use the hash tag #storm.
The Journal cited unnamed sources as saying Facebook is incorporating hash tags into the social network in a move that would let members organise comments and posts by topic.
The report said Facebook is testing use of the symbol but that the feature was not likely to be introduced imminently.