Hi guys. I wrote a Pharo binding for the LZ4 compressor.
If you are interested read here: http://marianopeck.wordpress.com/2012/11/16/lz4-binding-for-pharo/
And here: http://smalltalkhub.com/#!/~marianopeck/LZ4/

Cheers,

--
Mariano
http://marianopeck.wordpress.com