diff --git a/examples/gno.land/r/profile/profile.gno b/examples/gno.land/r/profile/profile.gno
new file mode 100644
index 00000000000..5080cd72964
--- /dev/null
+++ b/examples/gno.land/r/profile/profile.gno
@@ -0,0 +1,59 @@
+package profile
+
+import (
+	"std"
+
+	"gno.land/p/ufmt"
+	// "gno.land/r/users"
+)
+
+// FIXME: manage privacy?
+
+func newProfile(addr std.Address) *Profile {
+	now := std.GetTimestamp()
+	return &Profile{
+		address: addr,
+		created: now,
+	}
+}
+
+type Profile struct {
+	dict    map[string]interface{}
+	address std.Address
+	created std.Time
+	updated std.Time
+}
+
+func (p *Profile) save() {
+	now := std.GetTimestamp()
+	if p.created == 0 {
+		p.created = now
+	}
+	p.updated = now
+}
+
+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")
+		}
+		p.dict[k] = v
+	}
+	p.save()
+}
+
+func (p *Profile) Render() string {
+	output := ""
+	output += ufmt.Sprintf("* address: %q\n", p.address)
+	output += ufmt.Sprintf("* created: %v\n", p.created)
+	if p.updated > 0 {
+		output += ufmt.Sprintf("* updated: %v\n", p.updated)
+	}
+	for k, v := range p.dict {
+		output += ufmt.Sprintf("* %s: %v\n", k, v)
+	}
+	return output
+}
diff --git a/examples/gno.land/r/profile/profiles.gno b/examples/gno.land/r/profile/profiles.gno
new file mode 100644
index 00000000000..e1b2a1877a1
--- /dev/null
+++ b/examples/gno.land/r/profile/profiles.gno
@@ -0,0 +1,66 @@
+package profile
+
+import (
+	"std"
+	"strings"
+
+	"gno.land/p/avl"
+	"gno.land/p/ufmt"
+	"gno.land/r/users"
+)
+
+// TODO: makes sense to implement an allowance system?
+
+var profiles *avl.MutTree // std.Address.String() -> *Profile
+
+func init() {
+	// profiles = avl.NewMutTree()
+}
+
+func Update(dict map[string]interface{}) {
+	// FIXME: ask a price per stored data length?
+	currentUser := std.GetOrigCaller()
+	profile := getOrCreateProfileByAddress(currentUser)
+	profile.update(dict)
+}
+
+func GetByAddressOrName(aon users.AddressOrName) *Profile {
+	addr := aon.Resolve()
+	profile, found := profiles.Get(addr.String())
+	if !found {
+		return nil
+	}
+	return profile.(*Profile)
+}
+
+func getOrCreateProfileByAddress(addr std.Address) *Profile {
+	// lookup existing profile
+	profile, found := profiles.Get(addr.String())
+	if found {
+		return profile.(*Profile)
+	}
+
+	// create
+	newProfile := &Profile{address: addr}
+	profiles.Set(addr.String(), newProfile)
+	return newProfile
+}
+
+func Render(path string) string {
+	parts := strings.Split(path, "/")
+
+	switch {
+	case path == "":
+		output := ufmt.Sprintf("stats: %d known profiles\n", profiles.Size())
+		return output
+	case len(parts) == 1:
+		aon := users.AddressOrName(parts[0])
+		profile := GetByAddressOrName(aon)
+		if profile != nil {
+			return profile.Render()
+		}
+		return "404: no such profile"
+	}
+
+	return "404: invalid URL"
+}
diff --git a/examples/gno.land/r/profile/profiles_test.gno b/examples/gno.land/r/profile/profiles_test.gno
new file mode 100644
index 00000000000..6792a250c75
--- /dev/null
+++ b/examples/gno.land/r/profile/profiles_test.gno
@@ -0,0 +1,17 @@
+package profile
+
+import (
+	"fmt"
+	"testing"
+
+	"gno.land/r/profile"
+)
+
+func TestRender(t *testing.T) {
+	got := profile.Render("")
+	fmt.Println(got)
+	//_ = profile.Render
+	// various data types
+	// avatar
+	// ip address
+}