[sesqu]

> Skype is a standalone application where the only account you need is a Skype one, which is free, and isn't tied to any personal information other than an e-mail address.

When Microsoft bought Skype, I seem to recall them requiring all new users to use a Microsoft account instead of a Skype account. That isn't the case now, and it may have just been a confusing installer at the time, but it's a concern.