I'm diggin' you guys too
As far as i'm aware, scepticism involves making your own mind up about things, but doing it honestly and with integrity and hard work/research. If someone shows you something which genuinely affects the dataset you have used to assess the validity of something, then you must amalgamate that new data with what you have already, and if you are logical, your findings (opinions) will alter appropriately. Dead simple. If you do not have enough data on a subject then you must remain open to possibility until such a time that you have researched it to the satisfaction of your personal (and sometimes professional) integrity. Even then, always be prepared to accept new data.
Some of the ways in which I have seen some people claiming to be 'Skeptical' but failing miserably follow:
1. Not exercising personal or professional honesty (not treating all data fairly on it's own merits).
2. Not wanting to do hard work/research.
3. Expressing a strong opinion about something which they have not themselves sufficiently researched, and which cannot be altered through discussion, whilst not accepting any other opinion as valid.
I don't like the idea of fixing people into groups and calling them 'believers', 'skeptics', 'pseudoskeptics' etc. But yeah, either your reasoning stands up or it doesn't. An inability to change if it doesn't is a worry.