diff --git a/cmd/server/links.go b/cmd/server/links.go
index 143ef1e..ec509e2 100644
--- a/cmd/server/links.go
+++ b/cmd/server/links.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"log"
 	"sync"
 
 	com "git.qowevisa.me/Qowevisa/gotell/communication"
@@ -34,6 +35,7 @@ func (l *LinkCenter) AddLink(id uint16, link com.Link) error {
 		LeftNum: link.UseCount,
 		UserID:  id,
 	}
+	log.Printf("Added link by %s\n", string(link.Data))
 	l.Mu.Unlock()
 	return nil
 }
@@ -46,6 +48,7 @@ func (l *LinkCenter) DeleteLink(data []byte) error {
 }
 
 func (l *LinkCenter) GetLink(data []byte) (*UserLink, error) {
+	log.Printf("LinkCenter : GetLink by : %s\n", string(data))
 	val, found := l.Links[string(data)]
 	if !found {
 		return nil, ERROR_DONT_HAVE
diff --git a/cmd/server/main.go b/cmd/server/main.go
index 5d742b6..b128760 100644
--- a/cmd/server/main.go
+++ b/cmd/server/main.go
@@ -94,7 +94,7 @@ func handleClient(conn net.Conn) {
 			if err != nil {
 				answ, err := com.ServerSendClientDecline()
 				if err != nil {
-					log.Printf("ERROR: %v\n", err)
+					log.Printf("ERROR: BYTES: %v\n", err)
 					continue
 				}
 				conn.Write(answ)
@@ -103,7 +103,7 @@ func handleClient(conn net.Conn) {
 				binary.BigEndian.PutUint16(idBytes, id)
 				answ, err := com.ServerSendClientHisID(idBytes)
 				if err != nil {
-					log.Printf("ERROR: %v\n", err)
+					log.Printf("ERROR: BYTES: %v\n", err)
 					continue
 				}
 				conn.Write(answ)
@@ -136,7 +136,7 @@ func handleClient(conn net.Conn) {
 		case com.ID_CLIENT_ASK_SERVER_LINK:
 			link, err := linkCenter.GetLink(msg.Data)
 			if err != nil {
-				log.Printf("Error: %v\n", err)
+				log.Printf("Error: GetLink: %v\n", err)
 				continue
 			}
 			if link.LeftNum == 0 {
diff --git a/cmd/server/users.go b/cmd/server/users.go
index 5c1e9d4..8558a94 100644
--- a/cmd/server/users.go
+++ b/cmd/server/users.go
@@ -23,8 +23,8 @@ func (u *UserCenter) Init() {
 }
 
 var (
-	ERROR_ALREADY_HAVE = errors.New("Username is already taken")
-	ERROR_DONT_HAVE    = errors.New("Username was not found")
+	ERROR_ALREADY_HAVE = errors.New("Already taken")
+	ERROR_DONT_HAVE    = errors.New("Not found")
 )
 
 func (u *UserCenter) AddUser(name string) (uint16, error) {