Billboard has put a redirect system in place so that links to the old positions redirect to the new. Unfortunately, Billboard had a bug for many years that corrupted their URL presentation. We have many links like
For the technically minded, the bug was that Billboard would always present the location inside of Billboard where the session began as the path, and the current location as a fragment. Note the last example above, where the person entered the site to read a column about Kanye West, proceeded to a chart page, and then pasted a link to the chart page into Wikipedia. When Billboard's redirection system encounters such a link, it redirects to the contents of the entry URL, not the fragment with the information that the reference points at.
For this task, Chartbot will look for links and fragments of the form <chart name>?chartDate=<date>, and replace the URL with the modern form.
Approved for trial (50 edits).MBisanztalk 16:31, 16 March 2013 (UTC)
Trial complete. Had to halt trial and repair after this disastrous edit, which turned out to be a bug in an rarely executed branch where a correctly parsing URL had been formed that returned a 404 error from Billboard. The 404 came about because the original URL contained an invalid date. Restarted repaired bot, and it functioned fine from that point onward. For anyone that reviews the diffs, edits that look like this one are correct: all the spurious text in the old URL was residue from the bug in the Billboard URLs discussed above.—Kww(talk) 02:30, 17 March 2013 (UTC)