Ok , hi :D
I'm going to tell you MY way of hacking someone.
Okay , i'v tested this myself at 4 accounts (with the new runescape site) and i'v hacked 3 of them. So that's 75% :)
Here it goes :

Go to the recover an account form and go to "recover a stolen password"
This is what you do :
1. Recoverys : (tell you know them.)
-idontknowit
-idontknowit
-idontknowit
-idontknowit
-idontknowit

2.Old passwords :
-abc123
-1337
-[thinkofsomething]

3.New password :
-ThepasswordyouwantfortheaccountandithastobethesamexD
-ThepasswordyouwantfortheaccountandithastobethesamexD

4.Other info :
This is important.

Created :
Think of something. I'm always using may 2005.

Internet provider :
Any internet provider. I'm always using Belgacom, put this :
Belgacom, 65.55.111.141

65.55.111.141 is the hotmail ip :D

Ever moved ?
No

More info :
Hometown + Country : Cambridge, England.
My ip might say it's in the US because my provider is based there.
Ip : 65.55.111.141
I'm still planning on committing suicide.
_______________

Always put something like suicide , but don't overreact like OMG imma kill myself if i don't get my account back woooo !!!!!! F*ck you jagex, suicide !
Keep it simple.

That's all.

This is MY technique , and may be used outside this site , i don't care xD

Btw : don't think you can hack zezima this way , he's almost unhackable