I understand there's no theoretical character limit to a URL, but it's 255 for the domain.
The consensus seems to indicate a safe bet is about 2000 characters, but it all depends on the browser and web server.
The twitter API faq for t.co doesn't mention a limit for expanded links, but instead only the shortened links.
Does anyone know what the maximum character count for a fully-expanded t.co link is, regardless of browser or target web server?
Is there a quick and easy way to check?
What happens if a link is too long?