@Paradox I’m not sure I understand exactly what your problem is but if this helps or answers your issue: what I do is, if come across a link or multiple links I might want, I copy them from the browser’s address line into textedit until I need them and if I want to find one after I have started my comment, I open a new window in my browser, go to the site and copy the link from the address line and either paste it into textedit or directly into the answer on fluther.
And much of the time, if I am working on a particular long or complex comment, or one I want to get just right or one with multiple links I want to get just right, I write the whole comment in textedit and then paste it into the fluther comment box, then I never lose either the comment or the links.
But yes, you do have to list/enter multiple links one at a time. It can be rather tedious if you have more than two but that’s the way it has to be done here.