Here is another American Express syncing promotion for you. Tweet #AmexCelticsOffer and you’ll get a $10 statement credit when you spend $30+ on Celtics merchandise at TD Garden. Promotion lasts until April 17, 2013. Unfortunately this does not work for ticket sales and it does not say anything about food outlets. My assumption is that it only works for stores containing Celtics branded merchandise.

Remember, with any of these promotions, you must have an American Express card already linked to your Twitter account and then tweet the applicable hashtag. To sync your American Express credit card to Twitter go to this site and enter your card info.

Now, items at the Celtics aren’t cheap per se, so if you have a $60+ purchase, make sure to split it up onto two different Amex cards (both which you have a already synced and register with separate Twitter accounts), so you can get a total of $20 off.

While I haven’t been to a Celtics game in a few years now, I am personally a big fan of this promotion as a grew up going to about 50% of the Celtics home games. Those were the good old days at the real Boston Garden!