We've already heard of instances where customers turn to Twitter to air their grievances about a particular company. Now Hyatt and Best Buy are trying to make it that much easier for their customers to contact them with questions or concerns thanks to their new Twitter services: Twelpforce and HyattConcierge.

With Twelpforce, Best Buy is hoping that its hundreds of employees will handle tech-related issues and customer service questions. And so far, so good, by the looks of it. Questions seem to be getting answered in a prompt fashion.

As for Hyatt, @HyattConcierge is for anyone who has questions about trip details, staying at a Hyatt in general, or any other issues that may arise during your stay at one of the company's hotels.

Overall, I think it's a great idea that companies are doing this — it certainly saves you from calling a 1-800 number and being passed from one customer service rep to another!