For example, this is an ad I saw today:
This one was for a job board (job boards play this game a lot). Other common advertisers are training or college programs; and tech or biotech companies. It's a fun mix of languages and styles. Here are some recent ones:
- a for-profit college: Java
- biotech company: C++? (I think?)
- a large college: Java
- a job board: that was totally not a language. We'll be polite and say pseudocode
- a technology company: Perl
The use of actual recognizable languages is surprisingly high!