diff --git a/README.md b/README.md
index bf17de7..29b2d0b 100644
--- a/README.md
+++ b/README.md
@@ -7,12 +7,15 @@ Source code for http://www.fc00.org (http://h.fc00.org on Hyperboria).
 In order to display accurate map of Hyperboria fc00 need your help. If you run CJDNS node, please send your network view using sendGraph.py script.
 
 ```bash
+# Install requests and cjdns for Python 3
+pip3 install cjdns requests
+# Get the script
 wget https://raw.githubusercontent.com/zielmicha/fc00.org/master/scripts/sendGraph.py
-# edit configuration
+# Edit configuration
 nano sendGraph.py
 chmod +x sendGraph.py
 
-# Run this every 5-60 minutes
+# Run this every 20-100 minutes
 ./sendGraph.py
 # For example, add it to crontab
 (crontab -l; echo "@hourly /root/sendGraph.py") | crontab -
diff --git a/scripts/sendGraph.py b/scripts/sendGraph.py
index 5dbedde..ba1f613 100755
--- a/scripts/sendGraph.py
+++ b/scripts/sendGraph.py
@@ -6,10 +6,11 @@
 #    www.fc00.org                  for clearnet access
 #    h.fc00.org                for hyperboria
 #    [fc53:dcc5:e89d:9082:4097:6622:5e82:c654] for DNS-less access
-url = 'http://h.fc00.org/sendGraph'
+url = 'http://www.fc00.org/sendGraph'
 
 # update your email address, so I can contact you in case something goes wrong
-your_email = 'your@email.here'
+your_mail = 'your@email.here'
+
 
 # ----------------------
 # RPC connection details
@@ -35,6 +36,8 @@ import cjdns
 from cjdns import key_utils
 from cjdns import admin_tools
 
+import queue
+import threading
 
 def main():
     con = connect()
@@ -42,18 +45,38 @@ def main():
     nodes = dump_node_store(con)
     edges = {}
 
+    get_peer_queue = queue.Queue(0)
+    result_queue = queue.Queue(0)
+
     for k in nodes:
-        node = nodes[k]
-        node_ip = node['ip']
-        print(node)
+        get_peer_queue.put(k)
 
-        peers = get_peers(con, node['path'])
+    for i in range(8):
+        threading.Thread(target=worker, args=[nodes, get_peer_queue, result_queue]).start()
 
+    for i in range(len(nodes)):
+        peers, node_ip = result_queue.get()
         get_edges_for_peers(edges, peers, node_ip)
 
     send_graph(nodes, edges)
     sys.exit(0)
 
+def worker(nodes, get_peer_queue, result):
+    con = connect()
+
+    while True:
+        try:
+            k = get_peer_queue.get_nowait()
+        except queue.Empty:
+            return
+
+        node = nodes[k]
+        print('fetch', node)
+        node_ip = node['ip']
+
+        peers = get_peers(con, node['path'])
+
+        result.put((peers, node_ip))
 
 def connect():
     try:
@@ -108,7 +131,7 @@ def get_peers(con, path):
     peers = set()
 
     i = 1
-    while i < 5:
+    while i < 3:
         res = con.RouterModule_getPeers(path)
 
         if ('result' in res and res['result'] == 'timeout') or \
@@ -179,7 +202,7 @@ def send_graph(nodes, edges):
     json_graph = json.dumps(graph)
     print('Sending data to {:s}...'.format(url))
 
-    payload = {'data': json_graph, 'mail': your_email}
+    payload = {'data': json_graph, 'mail': your_mail, 'version': 2}
     r = requests.post(url, data=payload)
 
     if r.status_code == requests.codes.ok:
diff --git a/web/graphData.py b/web/graphData.py
index a75cf2d..8b9f418 100644
--- a/web/graphData.py
+++ b/web/graphData.py
@@ -17,6 +17,12 @@ def insert_graph_data(config, data, mail, ip, version):
     with open(config['LOG'], 'a') as f:
         f.write(log + '\n')
 
+    if mail == 'your@email.here':
+        return 'Please change email address in config.'
+
+    if version != 2:
+        return 'You are using outdated version of sendGraph script. Get new version from https://github.com/zielmicha/fc00.org/blob/master/scripts/sendGraph.py'
+
     nodes = dict()
     edges = []