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Multiple logins to the same site

Multifox is a great firefox add-on that allows you to switch between multiple accounts on the same site (Say you have two facebook accounts and you need to switch between them and are tired of logging out and then back in again). It's user interface is simple and effective.

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UPDATE:

The omnipresent anonymous asked:
Trying to enter sentence so that text forms the number three...any ideas?
The solution:
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