Newbie question

Sorry I am new to internet marketing and Ebay selling.... here I see many tread in which people look for Ebay/Paypal Stealth account.

So my (newbie) question is: why do they look for that? I mean: which are all the advantages to have more than one Paypal/Ebay account??
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There are a few reasons for a stealth account. The main reason is if you fuck up and your real account gets permanently banned. In this case, if you still want to continue selling on Ebay you must get a stealth account. Another reason is to bypass account limitations. New ebay sellers usually have very low limits for many months. To bypass that you can start a few stealth accounts at the same time. Finally, there are some other issues with scaling to large amounts. For example, paypal might not allow you to cross $100k+ monthly revenue if they think your business model is too risky for them. Otherwise they will put your account on a rolling reserve where they will hold a large portion of your incoming funds for a few weeks. You can bypass this by using stealth accounts and never crossing such high amounts.