Hi Lydia, I did reply to a Tweet to alert you to this but thought I'd pop it here as well so I can give you a few more details.
When you post a shortened URL on Twitter, I get their "The site you were trying to visit may be unsafe" warning if I click on it. If you click through for more info, it points to
this help page (all stuff I'm sure your tech guys know).
This started happening yesterday, no problems before that. I'm using Firefox v30.0 on a PC under Windows 7
No idea whether this means there's something wonky with database registrations again or whether there's something else going on but thought it worth raising.
ETA: other URLs using the same shortening are OK for me, it's just SCS that's being flagged.