The Red Sox will place 100 balloons in Boston neighborhoods today, and each one has two tickets to a game inside.

Five of the balloons will have a pair of tickets for Friday's 100th anniversary game.

The balloon blitz began at 7:30 a.m., and runs until 3:30 p.m. No more than 10 balloons will be out at any time, according to a news release about the event.

Follow the discoveries on this page, which collects Tweets from the Red Sox (@RedSox is tweeting every time someone finds one) and others. Use the hashtag #Fenway100balloons to have your tweets considered.