diff --git a/bvCrawler4/Program.cs b/bvCrawler4/Program.cs
index 200e64b1..7305ac7c 100644
--- a/bvCrawler4/Program.cs
+++ b/bvCrawler4/Program.cs
@@ -56,7 +56,7 @@ namespace bvCrawler4
                 {
                     try
                     {
-                        if (last_top30 < DateTime.Now.AddMinutes(-30))
+                        if (last_top30 < DateTime.Now.AddMinutes(-60))
                         {
                             last_top30 = DateTime.Now;
                             QueueTop30(pid);
@@ -322,6 +322,13 @@ namespace bvCrawler4
             int count = data.Length / 240;
             Console.WriteLine("{0} results found.", count);
 
+            if (count == 0)
+            {
+                // Nothing found. Sleep as to not spam the server with lots of empty searches
+                Thread.Sleep(1000 * 30);
+                return;
+            }
+
             // 12 bytes of header plus 240 bytes per search result.
             using (MySqlConnection db = CreateConnection())
             {