Quote Originally Posted by Bartholomew View Post
It doesn't really appear to me that there's any mystery. Square's writers are not skilled enough to include such an implicit plot point; if Rinoa was Ultimecia, it would have been said explicitly. I think it's much more likely that the writers simply left large holes in the plot because they were writing the story for a game made primarily for the 10-14 age group.
If it was to be shown, then this game would be less interesting. They intended on not giving too much information, apart from hints.
Did you actually think that FF8 characters saying things such as "zomg, Rinoa, are u really Ulti?" would prove the theory? No, those characters don't have full knowledge about Ulti, etc but there are hints that may lead to strange things without them directly saying about those things.

If the finger sign was just random, then how come we see it so many time?

Pointing like that is a fairly well known affectionate sign - nothing more, nothing less.
Please elaborate more. There are specific events that are "affectionate" in the game, we don't see them a lot, but we see the finger sign a lot. Get my point?