Expired links: not so good

BLAST servers at NCBI, Ensembl, etc. have a nifty feature in which your search is assigned a unique identifier (RID), which can be used to retrieve your results later. Unfortunately (but understandably) the unique identifier expires in a relatively short time; i.e. 48 hours. Therefore, links to BLAST results through the RID don't work after a few days. The way around this is to save your BLAST results as an html file (better), or link to the Blink entry (good).