diff --git a/Cryptocoin.py b/Cryptocoin.py
index 8f4557d..d553d86 100644
--- a/Cryptocoin.py
+++ b/Cryptocoin.py
@@ -4,6 +4,7 @@ from discord.ext import commands
 from urllib import request
 import json, requests
 import time
+import random
 
 class Cryptocoin(object):
 	"""Voor al uw crypto currency advies."""
@@ -44,37 +45,113 @@ class Cryptocoin(object):
 			return priceData[coinId][currencyId]
 		except:
 			return -1
-			
+	
+	#dermines the expected growth of coin
 	def analyseCoin(self, coinId):
 		N_DATAPOINTS = 12
 		TIME_BETWEEN_DATAPOINTS = 86400 * 7 #one week
 
+		#Get the price history:
 		history = []			
 		for j in range(0, N_DATAPOINTS):
 			history.append(self.getCoinPrice(coinId, "USD", int(time.time()) - (N_DATAPOINTS-j)*TIME_BETWEEN_DATAPOINTS))
 		
-		#print(history)
-		
+		#Check the growth. Do some linear regression
 		growFactorLongTerm, dummy =  self.basic_linear_regression(range(0, N_DATAPOINTS), history)
 		growFactorShortTerm, dummy = self.basic_linear_regression(range(0, 3), 
 			[ history[N_DATAPOINTS-3], history[N_DATAPOINTS-2], history[N_DATAPOINTS-1] ])
 			
-		#print("long:   ", growFactorLongTerm)
-		#print("short:  ", growFactorShortTerm)
-		
-		#print(growFactor)
-
-		if (history[N_DATAPOINTS-1] != 0):
+		if (history[N_DATAPOINTS-1] == 0):
+			growPercentageLongTerm = 0 
+			growPercentageShortTerm = 0
+		else:
 			growPercentageLongTerm  = growFactorLongTerm  / history[N_DATAPOINTS-1]
 			growPercentageShortTerm = growFactorShortTerm / history[N_DATAPOINTS-1]
 		
 		growPercentage = growPercentageLongTerm*0.3 + growPercentageShortTerm*0.7 #weighted average
 		return growPercentage, history
-        
-        #TODO:
-        # - iets met stabiliteit?
-        # - https://en.wikipedia.org/wiki/Head_and_shoulders_(chart_pattern)
-        # - neural networks???
+		
+		#TODO:
+		# - iets met stabiliteit?
+		# - https://en.wikipedia.org/wiki/Head_and_shoulders_(chart_pattern)
+		# - neural networks???
+		
+	
+	#will return some random advice about a semi-random crypto coin	
+	def getRandomCoinAdvice(self):
+		#get all the coins!
+		coinlistUrl = "https://min-api.cryptocompare.com/data/all/coinlist"
+		coinlistResponse = requests.get(coinlistUrl)
+		
+		popularCoins = [
+			{"Symbol" : "BTC", "Name" : "BitCoin"},
+			{"Symbol" : "ETH", "Name" : "Ethereum"},
+			{"Symbol" : "ETC", "Name" : "Ethereum Classic"},
+			{"Symbol" : "LTC", "Name" : "LiteCoin"},
+			{"Symbol" : "XMR", "Name" : "Monero"},
+			{"Symbol" : "XRP", "Name" : "Ripple"},
+			{"Symbol" : "DOGE", "Name" : "Dogecoin"},
+			{"Symbol" : "NLG", "Name" : "Gulden"}
+		]
+		
+		if (coinlistResponse.ok):
+			coinlistData = json.loads(coinlistResponse.content.decode('utf-8'))
+			coinlist = []
+
+			for coin in coinlistData["Data"]:
+				coinlist.append({
+					"Symbol" : coinlistData["Data"][coin]["Symbol"] ,
+					"Name" : coinlistData["Data"][coin]["CoinName"]
+				})
+
+			#Analyse until you've found something interesting
+			for i in range(0, 99):
+			
+				#pick a random coin
+				if (random.randint(0, 4) == 4):
+					#kans van 1 op 5 dat we naar een populaire coin kijken
+					randIndex = random.randint(0, len(popularCoins)-1)
+					tempId	 = popularCoins[randIndex]["Symbol"]
+					tempName   = popularCoins[randIndex]["Name"]
+				else:
+					randIndex = random.randint(0, len(coinlist)-1)
+					tempId	 = coinlist[randIndex]["Symbol"]
+					tempName   = coinlist[randIndex]["Name"]
+				
+				#analyse:
+				growPercentage, tempHistory = self.analyseCoin(tempId)
+				
+
+				#For the first few iterations we're picky
+				if (growPercentage > 0.1):
+					return (tempName + " (" + tempId + ") gaat to the moon!")
+				if (growPercentage > 0.06):
+					return ("Ik zou zeker een paar " + tempName + " (" + tempId + ") kopen.")
+					
+				if (i > 2):
+					#Later, negative advices are also acceptable...
+					if (growPercentage < -0.2):
+						return ("Ik zou zeker " + tempName + " (" + tempId + ") afraden!")
+					if (growPercentage > 0.015):
+						return ("Ken je " + tempName + " (" + tempId + ") al? Best leuk")
+				if(i > 4):
+					#After a while, we're happy to give less useful advice
+					if (growPercentage > 0.008):
+						return (tempName + " (" + tempId + ") kan interessant worden...")
+					if (growPercentage < -0.06):
+						return ("Als je toevallig " + tempName + " (" + tempId + ") hebt: verkopen.")
+				if(i > 5):
+					#Anything goes. We're desperate.
+					if (tempHistory[ len(tempHistory)-1 ] == 0):
+						return (tempId + " is echt niks waard...")
+					if (growPercentage > 0.005):
+						return (tempName + " (" + tempId + ") is een crypto currency. Wist je dat?")
+				
+				time.sleep(0.1) #don't overload the API
+			
+			return "Sorry. De crypto adviezen zijn uitverkocht vandaag."
+		else:
+			raise Exception("API error")
 	
 	#user functions below
 	
@@ -108,10 +185,17 @@ class Cryptocoin(object):
 	@asyncio.coroutine
 	def coinadvice(self, ctx, coinId: str=""):
 		"""Voor al uw adviezen in monopolygeld
+		Vraag Stroop's mening over een specifieke coin:
+		!coinadvice NLG
+		Of vraag gewoon advies in het algemeen:
+		!coinadvice
+		(Over deze laatste optie moet soms even nagedacht worden)
 		"""	
 		
+		#Geen specieke coin? Doe random.
 		if(coinId == ""):
-			return #TODO
+			yield from ctx.channel.send( self.getRandomCoinAdvice() )
+			return
 		
 		coinId = coinId.upper()