Research by Walther and Tidwell found that people in online interactions use other cues, such as style and timing of messages. For example, taking time to reply to a social media status update may be a more intimate act than an immediate response. But taking too much time could be interpreted as a snub. So, there are nuances in virtual relationships that are just as subtle as in FtF relationships. Acronyms (e.g., LOL), emoticons and emojis can all be used as effective substitutes for facial expressions and tone of voice.