diff --git a/app/index.js b/app/index.js
index 00dcad7..c9633e1 100644
--- a/app/index.js
+++ b/app/index.js
@@ -2,8 +2,12 @@
 const FileSystem = require("fs");
 
 //external lib imports
+const Dicsord = require("discord.js");
 const JSONFile = require("jsonfile");
 
+//my imports
+const Util = require("discordjs-util");
+
 //app component imports
 const GuildData = require("./models/guild-data.js");
 
@@ -13,12 +17,28 @@ const SAVE_FILE = "./guilds.json";
 module.exports = (client) => {
 	const guildsData = FileSystem.existsSync(SAVE_FILE) ? parseJSON(JSONFile.readFileSync(SAVE_FILE)) : {}; //pull saved data from file
 
+	parseLinksInAllGuilds(client.guilds, guildsData).then(writeFile);
+
 	//set up an interval to check all the feeds
 
 	//set up an on message handler to detect when links are posted
 };
 
+function parseLinksInAllGuilds(guilds, guildsData) {
+	const promises = [];
+	for (let guild of guilds) {
+		const guildData = guildsData[guild.id];
+		if (guildData)
+			promises.push(guildData.cachePastPostedLinks());
+	}
+	return Promise.all(promises);
+}
+
 function parseJSON(json) {
 	const guildIDs = Object.keys(json);
 	guildIDs.forEach(guildID => { guildIDs[guildID] = new GuildData(guildIDs[guildID]); });
+}
+
+function writeFile(guildsData){
+	JSONFile.write(SAVE_FILE, guildsData, err => {if(err) Util.dateError(err); });
 }
\ No newline at end of file
diff --git a/app/models/feed-data.js b/app/models/feed-data.js
new file mode 100644
index 0000000..6179f07
--- /dev/null
+++ b/app/models/feed-data.js
@@ -0,0 +1,30 @@
+module.exports = class FeedData {
+	constructor({ link, channelName, roleID, cachedLinks }) {
+		this.link = link;
+		this.channelName = channelName;
+		this.roleID = roleID;
+		this.cachedLinks = cachedLinks;
+	}
+
+	/**
+	 * Returns a promise providing all the links posted in the last 100 messages
+	 * @param {Discord.Guild} guild The guild this feed belongs to
+	 * @returns {Promise<string[]>} Links posted in last 100 messages
+	 */
+	updatePastPostedLinks(guild) {
+		const channel = guild.channels.find(ch => ch.type === "text" && ch.name === this.channelName);
+
+		return new Promise((resolve, reject) => {
+			channel.fetchMessages({ limit: 100 })
+				.then(messages => {
+					messages.forEach(m => Array.prototype.push.apply(this.cachedLinks, getUrls(m))); //push all the links in each message into our links array
+					resolve(this);
+				})
+				.catch(reject);
+		});
+	}
+};
+
+function getUrls(str) {
+	return str.match(/(\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|!:,.;]*[-A-Z0-9+&@#\/%=~_|])/ig);
+}
\ No newline at end of file
diff --git a/app/models/feed.js b/app/models/feed.js
deleted file mode 100644
index f9281a1..0000000
--- a/app/models/feed.js
+++ /dev/null
@@ -1,7 +0,0 @@
-module.exports = class Feed{
-	constructor({link, channelName, roleID}){
-		this.link = link;
-		this.channelName = channelName;
-		this.roleID = roleID;
-	}
-};
\ No newline at end of file
diff --git a/app/models/guild-data.js b/app/models/guild-data.js
index 6ee120c..82de0f9 100644
--- a/app/models/guild-data.js
+++ b/app/models/guild-data.js
@@ -1,8 +1,19 @@
-const Feed = require("./feed.js");
+const FeedData = require("./feed-data.js");
+const Util = require("discordjs-util");
 
 module.exports = class GuildData {
-	constructor({id, feeds}) {
+	constructor({ id, feeds }) {
 		this.id = id;
-		this.feeds = feeds.filter(feed => new Feed(feed));
+		this.feeds = feeds.filter(feed => new FeedData(feed));
+	}
+
+	cachePastPostedLinks() {
+		const promises = [];
+		
+		this.feeds.forEach(feed => {
+			promises.push(feed.cachePastPostedLinks(this).catch(Util.dateError));
+		});
+
+		return Promise.all(promises);
 	}
 };
\ No newline at end of file
diff --git a/package.json b/package.json
index 795442e..1223f18 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
     "discordjs-util": "git+https://github.com/benji7425/discordjs-util.git",
     "dns": "0.2.2",
     "feed-read": "0.0.1",
+    "jsonfile": "3.0.1",
     "urijs": "1.18.10"
   }
 }