Well, this is a bit late but here's an explanation anyway:
The Answerbank's server recognises hyperlinks when it sees the 'http' (or
https) bit at the beginning of them. If you only copy the
shortened URL (starting with 'www' and thus omitting the 'http' bit) you won't create a hyperlink.
Thus
http://www.theanswerbank.co.uk
works but
www.theanswerbank.co.uk
doesn't.
Highlighting a URL by dragging your cursor over it sometimes only copies the end bit (omitting the important 'http') whereas simply RIGHT-clicking on it, to highlight it, and the selecting 'Copy' should always work.