the hole vanity shit is a bad idea! Always use a new address to send and always a new to receive. -- END --
That is Bitcoin! All other use is stupid!
Well, I disagree here, at least to the first part. And in my opinion, there a quite a few very good use cases for vanity addresses or at least where it makes no difference to use a vanity address or not. I don't see a problem to receive small donations or signature campaign rewards to a vanity address, where your address is public on the site forum anyways. Or it's a good thing to use it on Bitcointalk to
stake your Bitcoin address and secure your account in case you get hacked. For doing so you don't even have to send Bitcoin to this vanity address.
Even if you are not planning to use your vanity address it's a very good way for everyone to get a feeling how impossible it is to guess (brute-force) another private key. Everyone can try it on his own device.