allowing topic, post, and user creation to specify a timestamp for insertion into the past

src/posts/create.js

@@ -12,6 +12,7 @@ var async = require('async'),
 
 module.exports = function(Posts) {
 	Posts.create = function(data, callback) {
+		// This is an internal method, consider using Topics.reply instead
 		var uid = data.uid,
 			tid = data.tid,
 			content = data.content.toString(),