From StrategyWiki, the free strategy guide and walkthrough wiki

Before you can make a contribution, StrategyWiki requires that its users register themselves before editing a page. Not only does this prevent sectarian vandalism from plaguing StrategyWiki's guides, but also allows users to be identified and credited under one common username. Registered users can use their StrategyWiki username and password to log onto the forums and participate in discussion there, the ability to message other editors via their talk pages, and be able to customize StrategyWiki's appearance and behavior to their liking.

All that is needed to register on StrategyWiki is a unique username and a password (no email address is required.) You can register your account here.

[edit] Security considerations

Security is highly valued by StrategyWiki's administrators, however it is your obligation to write a strong password to keep your account safe. We require that your password is at least six characters long.

• Don't share your password. Giving out your password to other people poses a very high risk of your password being shared among multiple people, let alone being impersonated. Keep it to yourself and protect the integrity of your work.
• Be creative with your password. Mix your passwords with numbers, capitals, and symbols. A password that isn't in the dictionary greatly decreases the chance of being guessed or brute forced. Make sure your password is unique.
• Make your password only something you would know. The first name of your neighbor's pet might make a good password, but it's no match for something only you would think of. Name a dream. Name a stray thought. A password only you would think of is a password someone who knows you well couldn't guess.
• Register with an e-mail address. Not only do you receive talk notifications by registering with an e-mail address, you also will be able to receive password reminders from StrategyWiki in the event you forget your password.