I want to approach specific FB groups and figure out someway to advertise in their group. I'm not quite sure how to go about it because I know these people don't want their group to look 'spammy' and I also believe it's against FB TOS to do this so I worry about approaching someone and having them contact Facebook and me getting banned or something like that. I know there are certain groups that would welcome me advertising on their group but the niche I'd be targeting may not be so receptive. Anyone have any experience with this?