Nowadays, the using of invitations is defeated by the technology expanding. Without any invitations, we can share our information through internet or mobile phone, simpler and more effective. But, for some people, these invitations still become the important tool for announcing something. Actually, there are some advantages if we use invitations. The first is it will be more formal and more polite. In this case, the invitations lead the market. We can see that the more sophisticated way is little bit impolite. The people who are invited by us feel that they are not needed much. The second is cheap. This statement is also very weak, but it is relative. There are some people who say that this is cheap and there are some who do not. If we compare it with mobile phone or internet, it will be more expensive, but it is still reasonable. Some people think that the invitation will fuss them with many things which they have to do such as making the invitations or deliver it to the destinations. It will make the process takes a long time and also takes expensive price. Those things are the causes which make the invitation is left by many people.