Identification of important VO spectral services benefiting from deployment on the Grid

The majority of VO-compatible spectra handling applications operates only with a few spectra entirely downloaded from single or several SSAP servers. We try to identify the scientific cases which could immediately benefit from future SSAP applications designed for GRID deployment. Their key feature is the sophisticated spectra pre-selection and preprocessing done on distributed servers using the intelligent agent summarising the results and performing final high-level processing or analysis.