I like the puzzles that you put on your blogs.
Searching for the right themes for you in my blog
I think you should start a series on improving calculation and visualization.
Yes please
Endgame! :0 More specifically - the transition from middle to end, planning, perhaps which types of endings result from certain openings?
And, planning and calculation in general - Candidate moves etc ..
Ditto to opening-to-middle game transition, and visualization. There is a huge, unfilled niche here. But it has to be done *very* well, probably using a method that hasn't been done before. Just saying, "Here, work these puzzles and your visualization will get better" would be the same lame method that isn't working for a lot of people. The same with opening-to-middlegame transition: You can't just say vaguely "Look for imbalances," or "If he moves here then move here," or "Use small plans.": if you're going to advocate small plans, then somehow they have to be tied to larger plans, and if you're going to advocate moves, then somehow they have to be connected with an overall plan and description of to which positions those candidate moves do and don't apply, and if the small plans are opening specific, then you'd have to connect the opening with the plan. I can't promise I'll visit your blog even if you do these things but I can promise I won't visit it a second time if you take the lazy way out and just do what everybody else is doing.
The problem every teacher must face is how to facilitate learning when their student struggles with something they don't remember having to learn themselves.
As far as teaching goes, I think chess is harder than average. The people who know the most are people who started at a young age, and probably haven't improved in tens of years. Their students are often starting as adults and struggling with details long forgotten by the instructor.
The best most can manage is to provide the same cirriculum, and hope that the methods that worked for them at 10 will work for their student at 40 
Dear Readers,
Which themes would you like to read about in my blog? http://www.chess.com/blog/attilaturzo What would you like to study by reading this blog?
Please write your ideas and suggestions in a comment!
Thank you for your help to making this blog better!
Atilla