Usage

• PC4PC is used by one user to let other users know that if they comment on the photograph posted the favor will be returned. This is a method of soliciting traffic to the photo you posted, as well as guaranteeing that feedback will be received.
  
  

Situations

• PC4PC is especially useful on websites dedicated to serious photography. Users can comment on each other's shots and offer helpful criticism. By using the PC4PC acronym, a user can attract more viewers who know that they will in turn also benefit from posting a comment.
  
  

Speed

• Like many Internet abbreviations, PC4PC is mainly used to express an intent quickly. It is a lot faster to type the acronym rather than to write out the whole phrase. Because it is used commonly, other users will know what the acronym means.