Paul, Always enjoy your comments and insights. Glad things are working out so well. If you are in Atlanta for the holidays i would love to grab drinks and catch up.
I am not usually one to bitch about a lack of social media integration, but this definitely should be something integrating into my facebook/twitter streams.
You should pay them in the form of referrals and connections through your network. Also a small amount of options/warrants are always nice, but you need to make sure that they are adding value in exchange for them. As far as formal payment goes, I would run from any advisors that require it. Once the business is starting to gain some cash flows I would suggest holding a quarterly dinner at a decent restaurant with the entire board present. As busy as advisors are, placing them in a formal atmosphere with the rest of the board usually requires them to slow down for a second and actually focus on you and your business.
I bet they announce a deal with foursquare pretty soon too. Just goes to show you have to be in it to win it. I realize they are overpaying for these opportunities, but this trend of what I call, private IPO's, seems to be the new hot thing and DST is going to run the table while everyone else catches on. I personally think they will be successful so long as they diversify their risk enough.