This is the mainsite, http://iro.ragnarokonline.com/index.asp, and they require money. But you can get a 15 day free trial. But the private servers are completely free.
This game has almost everything you could want a large amount of different items a ton of quests all with great rewards, tons of different types of character classes, dungeons, monsters, everything!
This is a link to the top 200 private servers
http://www.gamesites200.com/ragnarok/

Note: different servers have different features some have higher rates, meaning easier leveling, some have different drop rates for items, some have different characters and skills.

I don’t know if the following are the kind of thing you’re wanting for your blogroll, but just in case, you can consider the following:

Mamma Jamma’s DOD Community: www.mammajamma.org

Mamma Jamma’s is one the most popular Day of Defeat communities / game servers. We’re quite proud of our server’s popularity: www.happinessisawarmgun.mammajamma.org/rankings/

In case you don’t know (but how couldn’t you?) Day of Defeat is a modification of the Half-Life pc game. It is available as a free download to anyone who has an original Half-Life game installed on their computer. Otherwise, it costs $9.95 to get from www.steampowered.com

I also have a personal game-related blog you may want to add to your blogroll. I can’t say it is really active, but it is a blog that does focus on gaming: http://leftflankshooters.blogspot.com/

All the best with PC Gaming Blog. Cheers!

Cindy