Community Action Items: The general systems com- munity should think more about building tools to help users estimate their resource needs. Perhaps users in a shared environment will have access to a best-effort staging ground where they will be able to gauge their re- source usage. One can imagine future research tools (ei- ther modeling or analysis) that attempt to capture the re- source profile of a wide-area application. Such tools are an open area for ongoing and future research [10]. Sys- tems Market Designer Action Items: While there is on- going research into online market mechanisms—making an allocation decision before seeing all bid activity— designers should develop markets that are less.