diff --git a/app/services/dossier_search_service.rb b/app/services/dossier_search_service.rb
index bc57cfd64..8bb952085 100644
--- a/app/services/dossier_search_service.rb
+++ b/app/services/dossier_search_service.rb
@@ -39,7 +39,7 @@ class DossierSearchService
 
   def self.to_tsquery(search_terms)
     search_terms.strip
-      .gsub(/['?\\:&|!]/, "") # drop disallowed characters
+      .gsub(/['?\\:&|!<>\(\)]/, "") # drop disallowed characters
       .split(/\s+/)           # split words
       .map { |x| "#{x}:*" }   # enable prefix matching
       .join(" & ")
diff --git a/app/views/admin/procedures/_informations.html.haml b/app/views/admin/procedures/_informations.html.haml
index fecb2936c..6cb59133a 100644
--- a/app/views/admin/procedures/_informations.html.haml
+++ b/app/views/admin/procedures/_informations.html.haml
@@ -20,8 +20,8 @@
     = f.number_field :duree_conservation_dossiers_hors_ds, class: 'form-control', placeholder: '6', required: true
 
 .form-group
-  %h4 Lien site internet
-  = f.text_field :lien_site_web, class: 'form-control', placeholder: 'https://www.exemple.fr/'
+  %h4 Où les usagers trouveront-ils le lien vers la démarche ?
+  = f.text_field :lien_site_web, class: 'form-control', placeholder: 'https://exemple.gouv.fr/ma_demarche'
 
 - if  Flipflop.web_hook?
   .form-group
diff --git a/app/views/commencer/show.html.haml b/app/views/commencer/show.html.haml
index 5e71bbd19..df2325d3a 100644
--- a/app/views/commencer/show.html.haml
+++ b/app/views/commencer/show.html.haml
@@ -15,13 +15,21 @@
       = link_to 'Commencer la démarche', url_for_new_dossier(@procedure), class: ['button large expand primary']
 
     - elsif drafts.count == 1 && not_drafts.count == 0
+      - dossier = drafts.first
       %h1 Vous avez déjà commencé à remplir un dossier
-      = link_to 'Continuer à remplir mon dossier', brouillon_dossier_path(drafts.first), class: ['button large expand primary']
+      %p
+        Il y a <strong>#{time_ago_in_words(dossier.created_at)}</strong>,
+        vous avez commencé à remplir un dossier sur la démarche « #{dossier.procedure.libelle} ».
+      = link_to 'Continuer à remplir mon dossier', brouillon_dossier_path(dossier), class: ['button large expand primary']
       = link_to 'Commencer un nouveau dossier', url_for_new_dossier(@procedure), class: ['button large expand']
 
     - elsif not_drafts.count == 1
+      - dossier = not_drafts.first
       %h1 Vous avez déjà déposé un dossier
-      = link_to 'Voir mon dossier', dossier_path(not_drafts.first), class: ['button large expand primary']
+      %p
+        Il y a <strong>#{time_ago_in_words(dossier.en_construction_at)}</strong>,
+        vous avez déposé un dossier sur la démarche « #{dossier.procedure.libelle} ».
+      = link_to 'Voir mon dossier déposé', dossier_path(dossier), class: ['button large expand primary']
       = link_to 'Commencer un nouveau dossier', url_for_new_dossier(@procedure), class: ['button large expand']
 
     - else
diff --git a/app/views/layouts/_matomo.html.haml b/app/views/layouts/_matomo.html.haml
index 686be9450..0d8b58f16 100644
--- a/app/views/layouts/_matomo.html.haml
+++ b/app/views/layouts/_matomo.html.haml
@@ -1,11 +1,13 @@
 :javascript
   var _paq = _paq || [];
-  /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+  // Configure Matomo analytics
   _paq.push(["setCookieDomain", "*.www.demarches-simplifiees.fr"]);
   _paq.push(["setDomains", ["*.www.demarches-simplifiees.fr"]]);
   _paq.push(["setDoNotTrack", true]);
   _paq.push(['trackPageView']);
   _paq.push(['enableLinkTracking']);
+
+  // Load script from Matomo
   (function() {
     var u="//stats.data.gouv.fr/";
     _paq.push(['setTrackerUrl', u+'piwik.php']);
@@ -13,3 +15,20 @@
     var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
     g.type='text/javascript'; g.async=true; g.defer=true; g.src=u+'piwik.js'; s.parentNode.insertBefore(g,s);
   })();
+
+  // Send Matomo a new event when navigating to a new page using Turbolinks
+  // (see https://developer.matomo.org/guides/spa-tracking)
+  (function() {
+    var previousPageUrl = null;
+    addEventListener('turbolinks:load', function(event) {
+      if (previousPageUrl) {
+        var loadTimeMs = event.data.timing.visitEnd - event.data.timing.visitStart;
+        _paq.push(['setReferrerUrl', previousPageUrl]);
+        _paq.push(['setCustomUrl', '/' + window.location.href]);
+        _paq.push(['setDocumentTitle', document.title]);
+        _paq.push(['setGenerationTimeMs', loadTimeMs]);
+        _paq.push(['trackPageView']);
+      }
+      previousPageUrl = window.location.href;
+    });
+  })();
diff --git a/spec/services/dossier_search_service_spec.rb b/spec/services/dossier_search_service_spec.rb
index b0b05798f..d9c70d8d3 100644
--- a/spec/services/dossier_search_service_spec.rb
+++ b/spec/services/dossier_search_service_spec.rb
@@ -90,5 +90,11 @@ describe DossierSearchService do
 
       it { expect(subject.size).to eq(1) }
     end
+
+    describe 'search with characters disallowed by the tsquery parser' do
+      let(:terms) { "'?\\:&!(OCTO) <plop>" }
+
+      it { expect(subject.size).to eq(1) }
+    end
   end
 end
diff --git a/spec/views/commencer/show.html.haml_spec.rb b/spec/views/commencer/show.html.haml_spec.rb
index 274b55f45..b07600502 100644
--- a/spec/views/commencer/show.html.haml_spec.rb
+++ b/spec/views/commencer/show.html.haml_spec.rb
@@ -45,6 +45,7 @@ RSpec.describe 'commencer/show.html.haml', type: :view do
 
       it 'renders a link to resume the pending draft' do
         subject
+        expect(rendered).to have_text(time_ago_in_words(brouillon.created_at))
         expect(rendered).to have_link('Continuer à remplir mon dossier', href: brouillon_dossier_path(brouillon))
       end
     end
@@ -57,6 +58,7 @@ RSpec.describe 'commencer/show.html.haml', type: :view do
 
       it 'renders a link to the submitted dossier' do
         subject
+        expect(rendered).to have_text(time_ago_in_words(dossier.en_construction_at))
         expect(rendered).to have_link('Voir mon dossier', href: dossier_path(dossier))
       end
     end