I think Planetside have it in the bag. They provide a complete program for users to download for free, however restricted this is a lot better than the 30 day trial that most others offer. I am more than greatful for the oppertunity to be using Terragen 2(and that hasn't even been fully released yet!) for free at the moment. It's a great gateway for users to get into the fray, without the need to steal.
Most of the bigger companies won't even do this, and they're the ones who could afford to. A small team such as PS doesn't have to but they do anyway, bravo!
As has been stated, there are loads of freebies out there though, here's a few:
Google Sketchup has a free version, it's a really good modelling tool for beginners and experienced users, alike.
http://sketchup.google.com/download/The Gimp is a great alternative to Photoshop/paintshop, and also free.
http://www.gimp.org/DAZ Studio is a fully functional 3D app, and will be free for the duration of it's existence, I'd imagine. They also(if you've signed up to the mailing list) send you
regular email notifications for special offers and freebies, like models, shaders, scenes etc. Victoria 4 also comes with the newest release of the program.
http://www.daz3d.com/Crazybump is a fantastic texture creator(quite power hungry though).
http://www.crazybump.com/beta/download.htmlAnd hundreds of others...
If you are going to use pirated software,
on your own head be it! No one needs to know though so, don't go broadcasting the fact, you'll just look like a fool and people will resent that you've stolen what they've had to pay for, users and publishers both. Some things are best kept to yourself for everyone's sake.