This may seem obvious, but I think it deserves stating. In social media, especially in a corporate social media channel, it’s so important to sign your name at the end of your post. If you are using a page or handle that other people also use, make sure there is a signature on that post.
Social media is the perfect vehicle to personify brand image with cheery, helpful customer support representatives. Customers can develop a relationship with the person that helps them, and warm feelings associated with a particular representative are then (hopefully) associated to the brand itself. If you can achieve this, you have something special going on with your social presence.
In order for this personification to occur, the customer must be able to identify the person they are interacting with and remember that person. People cannot identify with or build a relationship with a nameless string of text coming at them through social media. People can identify with Patty, or Bob, or Sarah.
So, go ahead and sign that tweet. It makes a difference.