Online chess
In the past i've treated online chess as practice for OTB games. That is, i never used databases etc. Imanagad to get my rating over 1500 briefly. Then my boss sent me on a course and i timed out on a lot of games.
Anyway, after another round of timeouts i'm back and trying again. I happend on the post explaining the rules and thought why not?
So i fired up my database and got to it. I won the game, and i must say that it was the least satisfying win i've had. I did not outsmart my opponent. I did not display my awesome memory. I simply played the moves of Kasparov as found online, and when my opponent deviated from the book moves i had a won position that required me to think about exactly one move before winning.
Not fun at all!
No more databases for me. I'd rather loose a bunch of games and learn from it, than win simply because i have a big database!