I would totally recommend TF2 to my friends. TF2 does a great job at introducing new items and involving the community to build a fun and exciting future for the game. The steam integration rocks and the community behind it is even better. I started my Team Fortress playing back in 1996 with Quake Team Fortress and put 100s of hours of gameplay into the original and I think Valve has done an excellent job in developing a sustainable game with TF2. There are a ton of different ways to enjoy TF2, but there is something to offer for everyone. If you enjoy crafting, trading, or just a game of shoot 'em up, you can find a map or server that will be tailored for you. To keep me hooked for such a long time, the game definitely wins a 'thumbs up!' from me. Best of all, it is free to play, but don't forget to support the game developers if you can to keep the community going. Enjoy!