Working for free

particularly

More than usual or more than others.

Example: 

The restaurant is particularly popular with young people.

exclude

1. To deliberately not include something.

Example:

The judges decided to exclude evidence which had been unfairly obtained.

2. To not allow someone to take part in something or not allow them to enter a place, especially in a way that seems wrong or unfair.

Example:

A mainstream exhibition that excluded women artists.

3. To decide that something is not a possibility

Example:

At this stage we cannot entirely exclude the possibility of staff cuts.

candidate

Someone or something that is likely to experience or get something.

Example:

The school is an obvious candidate for extra funding.

I think internship is not a good thing, because it is more like a probation period or training period for student or fresh man and some internship even can not access to work content. All in all, I think company should pay at least the minimum  wage to interns.