diff --git a/src/server/routes.go b/src/server/routes.go
index 761524e..321995e 100644
--- a/src/server/routes.go
+++ b/src/server/routes.go
@@ -144,6 +144,7 @@ func (s *Server) handleFeedErrors(c *router.Context) {
 }
 
 func (s *Server) handleFeedIcon(c *router.Context) {
+	// TODO: caching
 	id, err := c.VarInt64("id")
 	if err != nil {
 		c.Out.WriteHeader(http.StatusBadRequest)
diff --git a/src/worker/worker.go b/src/worker/worker.go
index 523b0fe..c516bf8 100644
--- a/src/worker/worker.go
+++ b/src/worker/worker.go
@@ -48,6 +48,7 @@ func (w *Worker) FindFavicons() {
 }
 
 func (w *Worker) FindFeedFavicon(feed storage.Feed) {
+	// TODO: give up search attempts if the host is reachable but has no icon
 	icon, err := findFavicon(feed.Link, feed.FeedLink)
 	if err != nil {
 		log.Printf("Failed to find favicon for %s (%s): %s", feed.FeedLink, feed.Link, err)