diff --git a/profiles/models.py b/profiles/models.py
index 11c0dc5..0322c3c 100644
--- a/profiles/models.py
+++ b/profiles/models.py
@@ -106,3 +106,36 @@ class SearchEngine(models.Model):
         if '{}' not in pattern:
             raise InvalidData("Search engine {}: bad pattern".format(self))
         return str(self.query_pattern).format(search_term)
+
+
+class Interest(models.Model):
+    ''' A class of interests '''
+
+    name = models.CharField(max_length=256)
+
+    keywords = models.ManyToManyField(Keyword)
+    places = models.ManyToManyField(Place)
+    websites = models.ManyToManyField(Website)
+    events = models.ManyToManyField(Event)
+
+    def __str__(self):
+        return self.name
+
+
+class Profile(models.Model):
+    ''' Represents a user profile, containing a few data to make their requests
+    consistent '''
+
+    nick = models.CharField(max_length=64,
+                            help_text="The user's online identity")
+    first_name = models.CharField(max_length=64)
+    last_name = models.CharField(max_length=64)
+    email = models.EmailField()
+    uses_urls = models.BooleanField(
+        help_text=('Does the user usually go to a given website using its url '
+                   'or searching it in a search engine?'))
+    interests = models.ManyToManyField(Interest)
+    search_engine = models.ForeignKey(SearchEngine,
+                                      on_delete=models.CASCADE)
+    browser_fingerprint = models.ForeignKey(BrowserFingerprint,
+                                            on_delete=models.CASCADE)