Thanks to a heads-up from a reader yesterday, noticed that loads of links are broken as they are all trying to go to https://www./files/ with no name of the site in it. Seems to be sorted now, but if it goes wrong again try:

• manually add usingenglish.com to the missing bit of the link
• Paste that incomplete link into Google
• Google the name of the thing that you are looking for

Links to other sites all seem to be working.