Is it copyright infringement if you use text from something but give a link and credit to the person/site -
passing it off as your own
Indeed. In the case of Big Brother news articles, however, C4 have made the official news feed freetext - i.e. it can be carried elsewhere provided each article says "Big Brother is a Bazal production for Channel 4," which is what we do. We've found over the past couple of years that a mirror of the official news feed is quite popular, as often people have experienced access difficulties to the official site.
To say that the site is a con I think is quite unfair - as Jason points out, the majority of the content is original and requires many hours of input a day from unpaid reporters.
To those people who are disappointed with the main site and/or forums, I'm sorry you feel that way, however any opinions -- good or bad -- are appreciated and respected and taken into consideration in trying to provide a better level of service.