Facebook's content can be rendered with a free software browser (such as
Trisquel's Abrowser). The mobile version of Facebook does not make this
browser run proprietary Javascript. So, unless you prove the contrary,
Facebook can be used with 100% free software.
Facebook's main use is to
Are you seriously writing that an invitation to donate is psychological
coercion? I completely fail to understand in what way it is bad to ask for
donations!
I do not know for sure (I have never had any Facebook account) but it looks
extremely easy. When adding an account (from the Accounts menu or using
Ctrl+A), one of the proposed protocols is Facebook (XMPP).
Trisquel is not SaaSS and neither is Facebook (for the most part): SaaSS is
doing your own computing on someone else server when you could do it on your
own computer. For instance using an online translator instead of installing
one on your system.
When posting something on a website, you
