If you mean passports when you say id just click on "To sign in with a different account click here" and just start putting in your different email addresses. If you mean how to sign in and use 10 different passports get the polygamy from mess.be
http://www.mess.be/pafiledb/pafiledb...53f0c0f44180e2
With that polygamy you will be opening a new messenger for each passport. If you mean using 10 different passports with only 1 messenger open it cant be done.