With apologies to Grant for forgetting to publicise this on Friday, better late than never I hope!
Anyhow, I'd like to point all my dearest readers towards one of the oldest and best puzzle blogs, A Cleverly-Titled Logic Puzzle Blog. Grant is currently running a raffle style contest with some cool prizes, and heavily incentivising you to donate to three charities that are close to his heart whilst you solve. The more money you donate, the more raffle entries you get! And as an extra incentive, the more each of the three charities receives, the more giant-sized puzzling fun Grant will supply as he approaches his 600th (!!!) puzzle. He's currently at #569, see here for more details.
It's all in a good cause, and any contribution will be appreciated even more than you'll appreciate Grant's great puzzles. Which is quite a lot!