PokerStars.com lets you enter a marketing code during sign up. Following these steps when making a new player account on poker stars and you will receive 100% bonus up to $50 free with your first deposit.

Enter Marketing Code: pawsub43

Now when you make your deposit you will be asked for a bonus code.

 Enter Bonus Code: DEC2007

Using this bonus code will also allow you entry to $500 freeroll tournaments up until December 15th.

 Best of luck at the tables.