diff --git a/specs/Rules-hasValue-spec.jsx b/specs/Rules-isExisty-spec.jsx
similarity index 94%
rename from specs/Rules-hasValue-spec.jsx
rename to specs/Rules-isExisty-spec.jsx
index ff4967a..e0e0524 100644
--- a/specs/Rules-hasValue-spec.jsx
+++ b/specs/Rules-isExisty-spec.jsx
@@ -2,7 +2,7 @@ var React = require('react/addons');
 var TestUtils = React.addons.TestUtils;
 var Formsy = require('./../src/main.js');
 
-describe('Rules: hasValue', function() {
+describe('Rules: isExisty', function() {
   var TestInput, isValid, form, input;
 
   beforeEach(function() {
@@ -23,7 +23,7 @@ describe('Rules: hasValue', function() {
 
     form = TestUtils.renderIntoDocument(
       <Formsy.Form>
-        <TestInput name="foo" validations="hasValue"/>
+        <TestInput name="foo" validations="isExisty"/>
       </Formsy.Form>
     );
 
@@ -41,6 +41,12 @@ describe('Rules: hasValue', function() {
     expect(isValid).toHaveBeenCalled();
   });
 
+  it('should pass with an empty string', function () {
+    expect(isValid).not.toHaveBeenCalled();
+    TestUtils.Simulate.change(input, {target: {value: ''}});
+    expect(isValid).toHaveBeenCalled();
+  });
+
   it('should fail with an undefined', function () {
     expect(isValid).not.toHaveBeenCalled();
     TestUtils.Simulate.change(input, {target: {value: undefined}});
@@ -59,20 +65,10 @@ describe('Rules: hasValue', function() {
     expect(isValid).toHaveBeenCalled();
   });
 
-/* ToDo:
-
-  it('should pass with an empty string', function () {
-    expect(isValid).not.toHaveBeenCalled();
-    TestUtils.Simulate.change(input, {target: {value: ''}});
-    expect(isValid).toHaveBeenCalled();
-  });
-
   it('should pass with a zero', function () {
     expect(isValid).not.toHaveBeenCalled();
     TestUtils.Simulate.change(input, {target: {value: 0}});
     expect(isValid).toHaveBeenCalled();
   });
 
-*/
-
 });
diff --git a/specs/Rules-isUrl-spec.jsx b/specs/Rules-isUrl-spec.jsx
new file mode 100644
index 0000000..5adc1a5
--- /dev/null
+++ b/specs/Rules-isUrl-spec.jsx
@@ -0,0 +1,74 @@
+var React = require('react/addons');
+var TestUtils = React.addons.TestUtils;
+var Formsy = require('./../src/main.js');
+
+describe('Rules: isUrl', function() {
+  var TestInput, isValid, form, input;
+
+  beforeEach(function() {
+    isValid = jasmine.createSpy('valid');
+
+    TestInput = React.createClass({
+      mixins: [Formsy.Mixin],
+      updateValue: function (event) {
+        this.setValue(event.target.value);
+      },
+      render: function () {
+        if (this.isValid()) {
+          isValid();
+        }
+        return <input value={this.getValue()} onChange={this.updateValue}/>
+      }
+    });
+
+    form = TestUtils.renderIntoDocument(
+      <Formsy.Form>
+        <TestInput name="foo" value="foo" validations="isUrl"/>
+      </Formsy.Form>
+    );
+
+    input = TestUtils.findRenderedDOMComponentWithTag(form, 'INPUT');
+
+  });
+
+  afterEach(function() {
+    TestInput = isValid = isInvalid = form = null;
+  });
+
+  it('should fail with "foo"', function () {
+    expect(isValid).not.toHaveBeenCalled();
+    TestUtils.Simulate.change(input, {target: {value: 'foo'}});
+    expect(isValid).not.toHaveBeenCalled();
+  });
+
+  it('should pass with "https://www.google.com/"', function () {
+    expect(isValid).not.toHaveBeenCalled();
+    TestUtils.Simulate.change(input, {target: {value: 'https://www.google.com/'}});
+    expect(isValid).toHaveBeenCalled();
+  });
+
+  it('should fail with an undefined', function () {
+    expect(isValid).not.toHaveBeenCalled();
+    TestUtils.Simulate.change(input, {target: {value: undefined}});
+    expect(isValid).not.toHaveBeenCalled();
+  });
+
+  it('should fail with a null', function () {
+    expect(isValid).not.toHaveBeenCalled();
+    TestUtils.Simulate.change(input, {target: {value: null}});
+    expect(isValid).not.toHaveBeenCalled();
+  });
+
+  it('should fail with a number', function () {
+    expect(isValid).not.toHaveBeenCalled();
+    TestUtils.Simulate.change(input, {target: {value: 42}});
+    expect(isValid).not.toHaveBeenCalled();
+  });
+
+  it('should fail with an empty string', function () {
+    expect(isValid).not.toHaveBeenCalled();
+    TestUtils.Simulate.change(input, {target: {value: ''}});
+    expect(isValid).not.toHaveBeenCalled();
+  });
+
+});
diff --git a/src/validationRules.js b/src/validationRules.js
index 6634310..7971262 100644
--- a/src/validationRules.js
+++ b/src/validationRules.js
@@ -6,8 +6,8 @@ var validations = {
   isDefaultRequiredValue: function (values, value) {
     return value === undefined || value === '';
   },
-  hasValue: function (values, value) {
-    return !!value;
+  isExisty: function (values, value) {
+    return isExisty(value);
   },
   matchRegexp: function (values, value, regexp) {
     return isExisty(value) && regexp.test(value);
@@ -21,6 +21,9 @@ var validations = {
   isEmail: function (values, value) {
     return validations.matchRegexp(values, value, /^((([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+(\.([a-z]|\d|[!#\$%&'\*\+\-\/=\?\^_`{\|}~]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])+)*)|((\x22)((((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(([\x01-\x08\x0b\x0c\x0e-\x1f\x7f]|\x21|[\x23-\x5b]|[\x5d-\x7e]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(\\([\x01-\x09\x0b\x0c\x0d-\x7f]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF]))))*(((\x20|\x09)*(\x0d\x0a))?(\x20|\x09)+)?(\x22)))@((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))$/i);
   },
+  isUrl: function (values, value) {
+    return validations.matchRegexp(values, value, /^(https?|s?ftp):\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?(((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|((([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|\d|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.)+(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])*([a-z]|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])))\.?)(:\d*)?)(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)?(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/i);
+  },
   isTrue: function (values, value) {
     return value === true;
   },