yes
While i'm typing this;more than 40,000,000 people registered for an account.
the itouch has free Internet
Not at all, 10x more things possible with iTouch.
no but u can have two accounts
YES,YOUCAN HAVE MORE THAN ONE PLAYLIST
yes
Its been out for more than a year.
ipad . it is better than a itouch
Yes, over 700,000 more registered Democrats than Republicans.
There is no accurate answer to this but I believe that there are more unregistered accounts that contribute either because they don't have an account, or they have forgotten to log in.
I would rather choose the iPod Touch considering that you can do more with an iTouch than an PSP. You can also consider jailbreaking your Itouch allowing you to get those paid apps for free. But I do not advise it, as it will void the warranty of the iTouch.
Yes, I have registered for carrying out electronic transactions with my bank account through their website, with more than one bank.