diff --git a/spec/factories/member.rb b/spec/factories/member.rb
index 23a3d7fa6..7c7c08ed0 100644
--- a/spec/factories/member.rb
+++ b/spec/factories/member.rb
@@ -1,8 +1,9 @@
 FactoryGirl.define do
   sequence(:email) { |n| "member#{n}@example.com" }
+  sequence(:login_name) { |n| "member#{n}" }
 
   factory :member, aliases: [:author, :owner] do
-    login_name 'member1'
+    login_name { generate(:login_name) }
     password 'password1'
     email { generate(:email) }
     tos_agreement true
diff --git a/spec/models/garden_spec.rb b/spec/models/garden_spec.rb
index 58dc4a591..4a01f43d3 100644
--- a/spec/models/garden_spec.rb
+++ b/spec/models/garden_spec.rb
@@ -7,7 +7,7 @@ describe Garden do
   end
 
   it "should have a slug" do
-    @garden.slug.should == "member1-springfield-community-garden"
+    @garden.slug.should match(/member\d+-springfield-community-garden/)
   end
 
   it "should have a description" do
diff --git a/spec/models/member_spec.rb b/spec/models/member_spec.rb
index 130a6006e..0a4570ac2 100644
--- a/spec/models/member_spec.rb
+++ b/spec/models/member_spec.rb
@@ -15,13 +15,13 @@ describe 'member' do
       @member.save
       @member2 = Member.find(@member.id)
       @member2.should be_an_instance_of Member
-      @member2.login_name.should == "member1"
+      @member2.login_name.should match(/member\d+/)
       @member2.encrypted_password.should_not be_nil
     end
 
     it 'should have a friendly slug' do
       @member.save
-      @member.slug.should     == "member1"
+      @member.slug.should match(/member\d+/)
     end
 
     it 'should have a default garden' do
@@ -35,8 +35,9 @@ describe 'member' do
     end
 
     it 'should stringify as the login_name' do
-      @member.to_s.should == 'member1'
-      "#{@member}".should == 'member1'
+      @member.save
+      @member.to_s.should match(/member\d+/)
+      "#{@member}".should match(/member\d+/)
     end
 
     it 'should be able to fetch posts' do
@@ -67,4 +68,13 @@ describe 'member' do
     end
   end
 
+  context 'same :login_name' do
+    it "should not allow two members with the same login_name" do
+      FactoryGirl.create(:member, :login_name => "login-name")
+      member = FactoryGirl.build(:member, :login_name => "login-name")
+      member.should_not be_valid
+      member.errors[:login_name].should include("has already been taken")
+    end
+  end
+
 end
diff --git a/spec/models/planting_spec.rb b/spec/models/planting_spec.rb
index 60b22d3df..573847564 100644
--- a/spec/models/planting_spec.rb
+++ b/spec/models/planting_spec.rb
@@ -12,15 +12,15 @@ describe Planting do
 
   it "generates an owner" do
     @planting.owner.should be_an_instance_of Member
-    @planting.owner.login_name.should match /^member1$/
+    @planting.owner.login_name.should match /^member\d+$/
   end
 
   it "generates a location" do
-    @planting.location.should match /^member1's Springfield Community Garden$/
+    @planting.location.should match /^member\d+'s Springfield Community Garden$/
   end
 
   it "should have a slug" do
-    @planting.slug.should == "member1-springfield-community-garden-tomato"
+    @planting.slug.should match /^member\d+-springfield-community-garden-tomato$/
   end
 
 end
diff --git a/spec/views/crops/show.html.haml_spec.rb b/spec/views/crops/show.html.haml_spec.rb
index 86ee3bb58..7b95d76cb 100644
--- a/spec/views/crops/show.html.haml_spec.rb
+++ b/spec/views/crops/show.html.haml_spec.rb
@@ -40,7 +40,7 @@ describe "crops/show" do
 
   it "links to people who are growing this crop" do
     render
-    rendered.should contain "member1"
+    rendered.should contain /member\d+/
     rendered.should contain "Springfield Community Garden"
   end
 
diff --git a/spec/views/layouts/application_spec.rb b/spec/views/layouts/application_spec.rb
index a29e668c5..426579e9b 100644
--- a/spec/views/layouts/application_spec.rb
+++ b/spec/views/layouts/application_spec.rb
@@ -30,7 +30,7 @@ describe 'layouts/application.html.haml', :type => "view" do
     end
 
     it 'should show login name' do
-      rendered.should contain 'member1'
+      rendered.should contain /member\d+/
     end
 
     it 'should have a "Post" link' do
diff --git a/spec/views/members/index.html.haml_spec.rb b/spec/views/members/index.html.haml_spec.rb
index 4a4c52951..24a8d6845 100644
--- a/spec/views/members/index.html.haml_spec.rb
+++ b/spec/views/members/index.html.haml_spec.rb
@@ -14,8 +14,8 @@ describe "members/index" do
   end
 
   it "does not truncate short names" do
-    rendered.should contain "member1"
-    rendered.should_not contain "member1..."
+    rendered.should contain /member\d+/
+    rendered.should_not contain /member\d+\.\.\./
   end
 
   it "counts the number of members" do
diff --git a/spec/views/members/show.rss.builder_spec.rb b/spec/views/members/show.rss.builder_spec.rb
index a4be8cb48..320229e3a 100644
--- a/spec/views/members/show.rss.builder_spec.rb
+++ b/spec/views/members/show.rss.builder_spec.rb
@@ -11,7 +11,7 @@ describe 'members/show.rss.builder', :type => "view" do
   end
 
   it 'shows RSS feed title' do
-    rendered.should contain "member1's recent posts"
+    rendered.should contain /member\d+'s recent posts/
   end
 
   it 'shows content of posts' do
diff --git a/spec/views/plantings/index.html.haml_spec.rb b/spec/views/plantings/index.html.haml_spec.rb
index 1b026ac6d..85f53771a 100644
--- a/spec/views/plantings/index.html.haml_spec.rb
+++ b/spec/views/plantings/index.html.haml_spec.rb
@@ -25,7 +25,7 @@ describe "plantings/index" do
   it "renders a list of plantings" do
     rendered.should contain 'Tomato'
     rendered.should contain 'Maize'
-    rendered.should contain "member1's Springfield Community Garden"
+    rendered.should contain /member\d+'s Springfield Community Garden/
   end
 
   it "shows descriptions where they exist" do
diff --git a/spec/views/posts/show.html.haml_spec.rb b/spec/views/posts/show.html.haml_spec.rb
index 845fb47d4..703d50347 100644
--- a/spec/views/posts/show.html.haml_spec.rb
+++ b/spec/views/posts/show.html.haml_spec.rb
@@ -11,7 +11,7 @@ describe "posts/show" do
       FactoryGirl.create(:post, :author => @author))
     render
     # show the name of the member who posted the post
-    rendered.should match(/member1/)
+    rendered.should match(/member\d+/)
     # Subject goes in title
     rendered.should match(/This is some text./)
     # shouldn't show the subject on a single post page