Request http://www.webcitation.org to copy a supplied URL; WebCite does on-demand archiving, unlike Alexa/Internet Archive,
and so in practice this is the most useful function. This function throws away any return status from WebCite (which may be changed
in the future), so it is suggested that one test with a valid email address.
alexArchive ignore any attempt to archive the archive's existing pages, since that is useless.
Warning! WebCite has throttling mechanisms; if you request more than 100 URLs per hour, your IP may be banned! It is suggested that one sleep for ~30 seconds between each URL request.