There's another thread here asking "Whats best strategy to make easy money?"
https://bitcointalk.org/index.php?topic=5104674.0

Cool to see that most replies in that thread are honest and helpful - there *is* no easy way of making money.

But I was thinking it could be interesting to ask:
What are the *easiest* or *most popular* ways of making a profit using gambling and betting sites?

I will start with a first answer:

Matched Betting (Bonus Arbitrage)
http://sportsarbitrageguide.com/blog/tag/bonus-arbitrage/

I think quite a lot of people do this - it is a pretty simple algorithm/process to follow. But the margins are small, and the time required to actually do it profitably is off-putting for many. Plus the operators are getting cleverer at stopping this. But still, it doesn't require too much skill (or?) so I would class it as one of the "easiest" ways to make profits through gambling.

Any others that are easier or more popular?