figured i'd post a guide i wrote on another forum for anyone out there still wanting to do this.
i still do this daily as for me this game is about collecting the cars and taking photos more then anything.
its a bit long but it should be easy to follow.
so let me know what you think if you try my method.
generally i do this once a day and i usually do 10 at a time, then take a break and do another 10 later on in the night.
STEP 1:create 10 accounts (or as many as your going to do at a time) on your PS3, i just keep em as user 1, user 2 etc.
just create them and dont do anything else yet.
STEP 2: go to your computer with internet access. and open up some browsers.
personally i have 3 firefox browsers setup with different profiles for each (google if you dont know how to do this)
and my 1 internet explorer. i find having 4 gives me the best timing to do the next bit.
STEP 3: either bookmark or roboform these 2 links so there easily accessible.
http://10minutemail.com
https://store.playstation.com/accounts/register/beginNewAccountRegistrationFlow.action
STEP 4:
open your first browser window and go to
http://10minutemail.com and get your 10 min email. copy the address.
then head over to the PS registration link and begin to register an account.
when prompted use the email from the 10min mail you generated.
for Bday put the day it is your doing it, the month your doing it, and whatever year you want the car from.
you will get to a point where it says you need to do an email confirmation to continue.
once you get to this part, close that window and go back to your 10min Email and check the inbox for the link, it can take upto a minute sometimes so be patient.
STEP 5:
click on the link from the email,
once done you get to the stage where you have to put in your online ID
i just paste in the email which is still on the clipboard and delete the @ part forward, so it generally comes out like C520204. you can do whatever you want but i've found this to be the quickest way and it will always be available.
STEP 6:
next you will be prompted to put in your address.
this part is easy, use whatever letter is easiest for you to type quickest and put that letter into:
street part 1, (can leave part 2 part 3 blank)
city
for state you need a proper state
and for postcode u need a proper postcode.
just use your own state and pc as there generally the easiest to remember and quickest to type for most people.
so basically for the address part you will have 1 letter in most boxes, except for STATE and PC.
simple and quick.
STEP 7:
continue on, and follow the prompts, it gets quicker from here and once you have done it a heap of times you can do it very quickly.
so you basically click NO for the billing info.
next you just leave everything unticked and click next.
click next again and then your registered.
this is by far the quickest way to create multiple accounts.
so thats your first one, but if your like me your 10min email will still have 8mins left on it.
so this is where having multiple browsers comes in handy.
open up your next browser and if its a seperate mozilla profile, when you go to 10min email it will generate you a new email.
repeat the steps above and use as many browsers as you need until you have a cycle and never have to wait around for the emails to destruct.
do this until you have the desired amount of accounts created.
you should have a list and once your done you can go back to your PS3 with your ready to go accounts.
STEP 8:
best to do this part with a usb keyboard to speed things up.
open up each of the ps3 accounts you created before and go to create new account like before
however this time click the option "use an exisiting account"
and put your account details in you wrote down.
STEP 9:
once you have done that, go to friends, and add your main account
very important not to forget this part as it will slow you down heaps if you do.
now rince and repeat this for all 10 accounts you created. go into the ps3 account, sign in with your new account, add your main as a friend, and go to the next one.
dont bother going to your main to accept the friends request until you have done all the accounts.
STEP 10
once you have done the accounts, go to your main and go to message list.
click on recieved, and go thru and accept all the friends requests.
i've found this the quickest way to acccept multiple friends requests.
STEP 11:
now comes the fun part, all the above can usually be done in about 20-30mins tops.
the rest is the long part because of GT5s epic long slow load up time and stupid screens you have to press X on.
so get a book, browse a forum or have a tv near by or music going or something to keep you occupied or you will go mad with boredom.
i generally read a book lol over time you will get to the stage where you dont even need to look at the screen for the next part.
so basically what you do is this:
load up user 1
load up GT5
first thing you have to do is Press X for stupid HDD access box.
then as soon as you do this start holding the down button on the dpad (quicker then analog stick)
after the loading a box comes up with T&Cs, since your already holding down it scrolls to the bottom.
EDIT FOR ABOVE THANKS TO ELKAY:
you don't need to scroll the agreement. You can just quickly tap right-left.
should save everyone a bit more time, me included thanks mate!
press left, press X to accept.
now you can start mashing the X button.
it will go past the language select, the screen size select, and skip the movies.
keep mashing X, it will get to the start screen and go into GT mode.
first thing that comes up is uniform select so press right and press X to accept.
mash X again from here on wards until you hear all the beeps, its 3 beeps at the end which means you have your gift certificate.
press down twice to go to community
select your main
go to gift, item, mash x like 4 times and once its down PRESS PS button and quit game.
RINCE AND REPEAT for all your accounts you created.
once you have done all of them, you can go into your main and go from there.
have fun, it might seem like a lot of effort but for collectors like me its just another part of the daily GT5 grind.
i create some accounts when i first wake up and check my emails etc and then spend about an hour a day dong the rest.
for me its the most effecient way of doing this glitch that i have found.
sorry for the long post lol but hopefully it helps someone out!
hadn't found a proper guide anywhere for this exploit and since they have changed things its become alot more painful. its no way good for money, its only useful for those like me who like collecting and want to get all the cars in the game.