You have advanced technique, but you still have some ways to go. Let's look at the first sentence.>Is that why people watch Bleach and Naruto and praise it as the best show ever?
Excellent usage of the power of suggestion. By asking a question you're implying its truth. This would be enough for lower level posters, and I'm sure it has done you well so far. However, you made a few mistakes. First is the usage of the word "praise." It is too weak, you should use something with various connotations like "preach," or something that could imply that is wrong in order to invite those fans to post in outrage like "claim." Your second mistake was using Bleach and Naruto as examples. While they have widespread popularity, and provide quick reactions, they are often used as trolling examples making them far more suspicious than otherwise. Also, they are of the same genre, and a troll should get as many people angry as possible. Perhaps you should have said "Aria" and "Getter Robo" or perhaps "Gintama". That would have hit a wider audience that doesn't get as much trolling spotlight, thus their resistances are lower.
Now for the second sentence.>Of course, they use same arguement as you.
Another advanced one, I can only applaud the use of they being used to suggest the fanbases are uniformed and all use the same argument, and then connect them to the poster as if to say they were part of that group of fans. Truly skilled. The misspelling of argument could be intentional, but it could distract from the troll effort, and can only be detrimental to the overall impact. Other than that, it was a brilliant trolling sentence.