LaBrea still useful?

I'm new to this security stuff, so please be patient and use small words.

I've just read about LaBrea (http://labrea.sourceforge.net), a tarpit
program that looks very useful. But I see that it hasn't been updated
since 2003. Is it still useful, or have attackers somehow adapted to it
such that it's not so effective anymore?

If it's useful, any idea why it hasn't been updated in so long? It
appears to require some older versions of libnet, etc., which may make
it a bit onerous to compile on modern OS X.

Thanks,
- Joe