I am in need of some GM advice. I have a weekly adventure path group which I GM. This weekly group had to shift to a virtual tabletop over a year ago using Google Hangout due to the distances we've moved over the years. This group is made up of people that have been friends and have been role-playing for over 20 years.
I also maintain a bi-monthly face to face session with a different AP with the same group of people. What I have found is a significant difference between the level of RP between the two groups. The VT group has seemed to adopt a "video game" mentality when moving through the AP, while the face to face group seems to RP much more, and in general just have more fun. This is no doubt a common bi-product of the virtual vs face to face space.
I am looking for ways to incentivize RP with my virtual group. Are there any reward systems anyone uses to promote deeper RP? I don't want to use XP as an incentive as I tend to follow the AP's suggested progression paths. Thanks for any assistance you can provide!