This may be heresy for a bioclusters list, but .. Does anyone know if there are yet vendors of on-demand grid services that are cost-effective compared to installing and maintaining an in-house computer cluster? The example application would be BLAST, so needs include data storage and updates for frequently changing data in 100 MB .. 10+ GB range. I've got United Devices and Gateway.com on my list. - Don Gilbert -- d.gilbert--bioinformatics--indiana-u--bloomington-in-47405\ -- gilbertd@bio.indiana.edu