The easiest players to play against in facebook texas holdem poker are those that are consistent. The ones who always raise with certain hands, fold on other ones, go all in when they flop a flush or straight, etc. A facebook poker player can be  tight, agressive, loose, or any other playing style they choose that wins them facebook poker chips, but when they begin to become too consistent they give away their edge and allow more experienced players to gain too much insight into their poker strategy.
 For example, a good facebook poker player who studies texas holdem strategy extensively and tries to implement it at the tables during tournaments or games might find themselves being outplayed by other players because they’ve read the very same strategy pointers, tips, strategy book and watched the same videos. Once they recognize that you’re a “by the book” player who raises when he should and checks and folds when its statistically optimal, they can use that very same strategy against you to take all your facebook poker chips.
So how can this be countered? It’s quite simple really. “Sometimes” you need to do the oppositve of what you normally would do in any given situation. This doesn’t mean you should be calling raises of hundreds of millions of facebook poker chips with 7♣ 2♥, but if you can change up your normal texas holdem strategy just a little, you can throw off more experienced players from reading your every move and predicting your next one. The best part about the “sometimes” concept is that you only have to use it “sometimes”, meaning just enough times to keep your opponents wondering if “this time” is one of the times you’re messing around with them or whether you reall just flopped a monster hand.