The amount of data deposited in genomic and proteomic databases has been growing exponentially for many years [36] . Due to recent technological advances that have enabled wholegenome sequencing and made whole-proteome analysis a realistic goal, sequence data will accumulate at an even faster pace in the future where single laboratories, even single experiments, can generate data at the ''omics'' level. This is amply illustrated here where a high-density peptide microarray technology allowed the parallel synthesis of more than 100,000 discrete peptide sequences per array, and the collection of a corresponding number of quantitative peptide-receptor interaction data -all within a single experiment.