diff --git a/server.go b/server.go
index 395a35e..59c2e16 100644
--- a/server.go
+++ b/server.go
@@ -24,14 +24,13 @@ package main
 
 import (
 	"database/sql"
-	"os"
-	"strings"
-	// "encoding/json"
 	"encoding/json"
 	_ "github.com/go-sql-driver/mysql"
 	"log"
 	"net/http"
+	"os"
 	"path/filepath"
+	"strings"
 )
 
 var db *sql.DB
diff --git a/static/scripts/search.js b/static/scripts/search.js
index 0155d61..92aa26a 100644
--- a/static/scripts/search.js
+++ b/static/scripts/search.js
@@ -28,10 +28,10 @@
     function onAdjust(name, value) {
         _ctx.query.features[name] = value;
 
-        $.getJSON('/query', _ctx.query, function(results) {
+        $.post('/query', JSON.stringify(_ctx.query), function(results) {
             saveSnapshot(results);
             outputSnapshot(results, true);
-        });
+        }, 'json');
     }
 
     function onReady(geo) {
@@ -50,11 +50,11 @@
         });
 
         window.accessReview = function(id) {
-            $.getJSON('/access', {id: id, profile: getProfile()}, function(results) {
+            $.post('/access', JSON.stringify({id: id, profile: getProfile()}), function(results) {
                 if (results.success) {
                     location.replace(results.url);
                 }
-            });
+            }, 'json');
         };
 
         onSearch();
@@ -78,7 +78,7 @@
             };
         }
 
-        $.getJSON('/query', _ctx.query, function(results) {
+        $.post('/query', JSON.stringify(_ctx.query), function(results) {
             if (!_.has(_ctx, 'grapher')) {
                 _ctx.grapher = new grapher.Grapher({
                     canvas:         new Snap('#svg'),
@@ -116,7 +116,7 @@
 
             saveSnapshot(results);
             outputSnapshot(results, false);
-        });
+        }, 'json');
     }
 
     function saveSnapshot(results) {
diff --git a/util.go b/util.go
new file mode 100644
index 0000000..2fe2a36
--- /dev/null
+++ b/util.go
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package main
+
+type Features map[string]float32
+type Record struct {
+	features Features
+}
+
+func innerProduct(features1 Features, features2 Features) float32 {
+	var result float32
+	for key, value1 := range features1 {
+		value2, _ := features2[key]
+		result += value1 * value2
+	}
+
+	return result
+}
+
+func walkMatches(records []Record, features Features, minScore float32, callback func(Record, float32)) {
+	for _, record := range records {
+		if score := innerProduct(features, record.features); score >= minScore {
+			callback(record, score)
+		}
+	}
+}