Usually, you have a choice. It's your choice.
I get the, “So what IS Twitter?” question quite a bit. A friend told me it’s just like a big cocktail party. OK, I get it. If you have a business or a project or just something you’d like to promote, Twitter is an excellent way to get that information out there. However, just like at the in-person party, you need to step out the door, get there and then you really need to show up.