RuneScape

THE GOOD:
The game is run in java, so anyone can play it. There are lot's of skills like fishing, mining, smithing, prayer, combat etc.
Once you get the hang of it the game is great to play for anyone of any age or gender. There are a ton of quests to do when you're bored of training. It's easy to get around, and best of all, it's free!!!

THE BAD:
Little comment here, it get's boring to level up when you get past level 60 in a skill, but it's great fun before that. Just try the game yourself. Not all payment options for members are available in all countries. It can be pretty addictive and swallow up too much of your time.

SUMMARY:
If you get bored with your so called "F2P" skills, you can always think about becoming a member, who have 5 more skills, tons of updates, 3 times as many quests to do, with great story lines. There are alot of new weapons, like a poisened dagger a spear, completely new armors etc. etc. Do I need to say more? This game is great!!!