If visitors find the Glomerular Response Archive useful and wish to be notified of new data and changes to the site, they are encouraged to submit their email addresses, after which they will be notified of updates as soon as they occur. For at least the first year or two after launching the redesigned site, we anticipate doubling the data content and offering new tools for searching and viewing the activity patterns. We therefore suggest that visitors return frequently if they choose not to subscribe.