What some of blt938 has said is good but he hasn't explained everything so let me clarify a few things here.
First of all krilla you mentioned earler about giving out a SSN. You never give PayPal a SSN under any circumstances ever.
Giving PayPal your SSN is one of the worst things you can do if not the very worst thing for so many reasons.
First of all putting your SSN or a bogus SSN will enolate the credit on that SSN if things go bad on that account because eBay will have that SSN recorded in there system forever.
Most importantly the IRS has records to databases and could find you and put you in prison if your using someone else's information for identity fraud doing that will get you in way more trouble than you want to be in!
When PayPal does request a SSN or a TAX ID Number.
There are 2 options.
1. Move on and make more stealth accounts and let your account that is being asked for a SSN or Tax ID Number rest until January 1, 2015. Because that is when you will be able to sell on it again if you dont do anything.
2. I dont like doing this because it compromises your anonymity and your account will only be under eBay's radar only.
All you need to do is make a business name with the IRS and get a TAX ID Number under it. You will use your real info as just a business contact (for the IRS only).
Say you call your company "abby normal pool company". When you upgrade your PayPal to a business account, you go and enter that business name when it asks for one. Then your IRS info will match the PayPal info. They will only need this for reporting purposes, They send the IRS information that you made or that much on PayPal and it will be listed as "abby normal pool company". PayPal has no need or reason to get real info. They are just required to post the TAX ID Number with your dollar amount to the IRS. The IRS has your real info and will require you to pay your taxes. They are the ones you need to be worried about. Not PayPal.
You would NEVER get into trouble with the IRS unless you dont pay your taxes after you go with an TAX ID Number. There is a lot of stuff you will need to do by way of records, etc. Also you cant just file one year and not the next, They will want to know what you did with that business and you will have to show them. A good way to get audited is to file one year and not the next on a business. That will get you every time.