getting them frozen off is not a recomended option. I work in pathology and have seen skin tags come back as BCC,
I would get them cut out, if they are remotely interesting, i mean nasty looking
Some can be removed by a shaving them off, leaves limited scaring and atleast you can get a diagnosis..
If they are in an obvious spot either get a shave or punch biopsy first, then an appropriate removal technique can be applied.
If they are nasty and need a wider excission on your face etc, you can go see a plastic, and they will work their magic..