diff --git a/examples/gno.land/r/profile/integration0_test.gno b/examples/gno.land/r/profile/integration0_test.gno
index a42682fb15b..a1af5c47292 100644
--- a/examples/gno.land/r/profile/integration0_test.gno
+++ b/examples/gno.land/r/profile/integration0_test.gno
@@ -8,6 +8,9 @@ import (
 
 func main() {
 	fmt.Println("test")
+	// various data types
+	// avatar
+	// ip address
 }
 
 // Output:
diff --git a/examples/gno.land/r/profile/profile.gno b/examples/gno.land/r/profile/profile.gno
index 7702377b487..fc2374fc847 100644
--- a/examples/gno.land/r/profile/profile.gno
+++ b/examples/gno.land/r/profile/profile.gno
@@ -6,6 +6,8 @@ import (
 	"gno.land/r/users"
 )
 
+// FIXME: manage privacy?
+
 func newProfile(addr std.Address) *Profile {
 	now := std.GetTime()
 	return &Profile{
@@ -32,6 +34,8 @@ func (p *Profile) save() {
 func (p *Profile) update(dict map[string]interface{}) {
 	for k, v := range dict {
 		// TODO: additional checks here
+		// TODO: check v.Type()
+		// TODO: check v.Len()
 		if k == "address" || k == "created" || k == "updated" {
 			panic("reserved profile key")
 		}
diff --git a/examples/gno.land/r/profile/profiles.gno b/examples/gno.land/r/profile/profiles.gno
index 89d929f38d9..d0a218607c2 100644
--- a/examples/gno.land/r/profile/profiles.gno
+++ b/examples/gno.land/r/profile/profiles.gno
@@ -11,6 +11,7 @@ import (
 var profiles *avl.MutTree // std.Address.String() -> *Profile
 
 func Update(dict map[string]interface{}) {
+	// FIXME: ask a price per stored data length?
 	currentUser := std.GetOrigCaller()
 	profile := getOrCreateProfileByAddress(currentUser)
 	profile.update(dict)