diff --git a/plugins.py b/plugins.py
index 6bb2fd6..6359cc0 100644
--- a/plugins.py
+++ b/plugins.py
@@ -83,7 +83,7 @@ def data_parse_other(data):
 				elif 'reply_user' == a:
 					args['reply_user'] = reply_user
 				else:
-					logger('warn', 'unknown required arg for %s: %s' %(f, a))
+					logger('warn', 'unknown required arg for %s: %s' %(p['name'], a))
 
 		ret = p['func'](args)
 
@@ -327,7 +327,7 @@ def command_decode(args):
 
 		try:
 			uni_name = unicodedata.name(char)
-		except e as Exception:
+		except Exception as e:
 			logger('plugin', 'decode(%s) failed: %s' %(char, str(e)))
 			return {
 				'msg': args['reply_user'] + ": can't decode %s (%s): %s" %(char, char_esc, str(e))
@@ -399,7 +399,7 @@ def data_parse_commands(data):
 				elif 'reply_user' == a:
 					args['reply_user'] = reply_user
 				else:
-					logger('warn', 'unknown required arg for %s: %s' %(f, a))
+					logger('warn', 'unknown required arg for %s: %s' %(p['name'], a))
 
 		ret = p['func'](args)
 
diff --git a/urlbot.py b/urlbot.py
index 82919e4..b24c35c 100755
--- a/urlbot.py
+++ b/urlbot.py
@@ -94,7 +94,8 @@ def chat_write(message, prefix='/say '):
 			try:
 				msg = str(prefix) + str(message) + '\n'
 				msg = msg.encode('utf8')
-			except UnicodeDecodeError:
+			except UnicodeDecodeError as e:
+				logger('warn', 'encoding msg failed: ' + str(e))
 				msg = prefix + message + '\n'
 
 			fd.write(msg)
@@ -154,15 +155,11 @@ def extract_url(data):
 				lev_url = re.sub(r'https?://[^/]*/', '', url)
 				lev_res = levenshtein(lev_url, title)
 
-				lev_str = 'lev=%d/%d:%d ' %(lev_res, len(title), len(lev_url))
-
 				sim = str_sim(title, lev_url)
 				sim_len_title = len(sim)
 				sim_len_url = len(sim[0])
 				sim_sum = sum([sum(a) for a in sim])
 
-				sim_str = 'sim=%d/%d:%d ' %(sim_sum, sim_len_title, sim_len_url)
-
 				obj = conf_load()
 				obj['lev'].append((lev_res, title, url))
 				obj['sim'].append((sim_sum, sim_len_title, sim_len_url, title, url))