Oz Online
http://oz.ongameport.com/Description: A giant online community revolving around fishing... You fish in order to get money and buy stuff. You lvl up through fishing so you can wear higher brow items.
Pros: None I can think of...
Cons: Horribly executed, it takes forever to fish and there is a small probability of getting trash. Also the graphics are assy as hell, I've seen better from an N64. Slightly better than Runescape, but still crappy.
Second Life
http://secondlife.com/Description: Large online community with open ended avatar customization as well as the ability to generate your own objects into the world.
Pros: Yay avatar customization! Also you can fly around and make stuff.
Cons: Very laggy and crowded, and if you wanna do cool customization, it will require the use of photoshoppe.
Silk Road Online
http://www.silkroadonline.net/Description: Based on real Chinese History, but with fantasy mixed in. Characters you can play as include Geisha cat girl, prostitute, nerdy girl, Old guy, cliche protagonist, some chick with white hair, and chinese zombie woman.
Pros: Good graphics
Cons: Poor control scheme, also I got lost at the beginning. Sometimes laggy.
Rakion Online
http://www.rakion.com/Description: Insane MMO Fantasy Combat action game. From the people who made Gunbound.
Pros: One of the few free MMO action games you can play. Also you can do single player missions. You can summon creatures (if you have the game money to afford them...)
Cons: The game only lets you play with people who have similar internet connection speeds. Hyper Modes for characters are ugly... Especially Ninja... Also armor falling off when hit is kind of lame, it's not in comedic Ghouls N Ghosts type fashion. Also there's a lack of assortment of stuff you can use...
Kal Online
http://www.kalonline.com/Description: MMORPG with Medevial Fantasy theme
Pros: Decent graphics, I suppose.
Con: Game is laggy and crowded, especially since this game only has 2 large international servers. There's only 3 classes archer, mage, and swordsman. Yeah only one of them is a male class.
Trickster Online
http://www.tricksteronline.com/Description: Treasure hunting MMORPG where you drill for stuff.
Pros: Drilling is fun... Apparently in other versions you can get a pet based on two of the characters from Pangya (same company).
Cons: Took forever for me to download the client (4+ hours!). I hate how it requires me to log-in through their website. The English/Europe version is still new, but can get crowded. Also I'm not a big fan of going as people with animal ears and tail (you can rip them off when you hit lvl 20 though). Also you can't customize your av so much. Also occasional lag and the game can get crowded.
All of the games I listed above have been taken to the digital shadow realm due to frustration or me having a lack of interest.
So far the only new MMO game I found worth keeping is:
Ran Online
www.playran.com
Description:Insane Japanese School themed MMORPG where rival schools compete to be #1. All the schools are bizzarely over-ran by ghetto thugs and crackwhores who are apparently "monsters".
Pros: Interesting concept. lol Rival Schools. Auto decline for duels is a savior. Other players are usually good people. My favorite mission was to go clean the dormitory because all you do is kill piles of trash with a broom.
Cons: Logging in through IE, sometimes it errors alot. Also occasional lag and a few visual glitches. Limited assortment of stuff to equip with. Also I hate how some items have expiration dates.
There you have it a large list of free MMO games. Feel free to try them if you want...