Possibly, it'll work now.

plugins/scrape.rb

@@ -3,15 +3,49 @@ require 'digest/md5'
 
 include EventMachine::IRC::Commands
 
+DataMapper.setup(:default, Config[:scrape][:db])
+
+module Scrape
+    def download(uri)
+        ext = "." + word.sub(/.*[.]([^.]*)/, '\1') if word.match(/[^.]+[.][^.]+/)
+        content = open(word).read
+        md5 = Digest::MD5.hexdigest(content)
+        File.open(Config[:scrape][:basepath] + md5 + ext, 'w') do |file|
+            file.write(content)
+        end
+
+        return md5 + ext
+    end
+
+    class Link
+        include DataMapper::Resource
+
+        property :id,           Serial
+        property :url,          String
+        property :original_url, String
+        property :created_at,   DateTime
+        property :nick,         String
+    end
+end
+
+DataMapper.auto_upgrade!
+
 Client.register_trigger("PRIVMSG") do |msg|
     msg[:params].each do |word|
-        if word =~ /4cdn[.]org/ then
-            ext = "." + word.sub(/.*[.]([^.]*)/, '\1') if word.match(/[^.]+[.][^.]+/)
-            content = open(word).read
-            md5 = Digest::MD5.hexdigest(content)
-            File.open(Config[:scrape][:basepath] + md5 + ext, 'w') do |file|
-                file.write(content)
+        if word =~ /^https?:\/\// then
+            original_url = word
+            if word =~ /4cdn[.]org/ then
+                url = download(word)
+            else
+                url = Digest::MD5.hexdigest(word)
             end
+
+            Scrape::Link.create(
+                :url            => url,
+                :original_url   => original_url,
+                :created_at     => Time.now,
+                :nick           => msg[:prefix].split('!').first
+            )
         end
     end
 end