To be honest, I'm not totally sure what these things do. Right now, I have 60k in a pool, but I don't seem to be earning more credits when I play the events. I probably do, but the events are so inconsistent with credits that it's tough to know what is what. It's kind of confusing. But, that is sto.
Its bonus credits when you contribute to projects, not bonus marks...
What she said^^
Alot of people are confused because there is a type-o on the item description.
It increases the number of Fleet Credits you recieve when you contribute to a Starbase project. It does NOT increase the number of Fleet Marks you earn.