As said earlier though it is a lot different in Morrowind compared to Oblivion. In Morrowind you barely ever gained skill points for using them, you mostly relied on paying for trainers. Risen used a similar system… honestly it makes sense to pay trainers for skill boosts. High-level skill training was VERY expensive too, so you needed to make a lot of money questing and exploring to level up.
Oblivion, in contrast, gave you skill points every 5 seconds. You can max out your blade and armor skills in no time just from walking around and fighting. They also capped trainers to 5 points a level, making them useless for extensive training in skills. On top of that they even made training super cheap, and money easier to get.
In short I liked Morrowind's skill point system but disliked Oblivion's. I am hoping Skyrim's is better, and the perks sound like a cool way to actually make characters different, so we shall see.