This would be achieveable in your main interesting moments campaign. You just create a new INT field. and in every trigger in your interesting moments campaign you do a +1 for that field. Not perfect or very flexible, but at least provides you something until your idea has become reality.
@Diederik this is not a solution. The problem with this is you have no way to clean up date or catch up. For example you have been psoting the intereting moments for a few weeks and you now want to have a counter / score the numer of times it occurs. You approach will only work going forward. We for example capture interesting moments from our application that are posted into Marketo and I now want to clean up the score data for these...