I may be a little touchy with this one but there is something about spamming me using direct messaging which rubs me the wrong (and a more unpleasant) way. Only people you follow can direct message you so a degree of trust is implicit when you have the ability to DM someone on Twitter. Its one thing to push out this sort of spam in a general tweet stream but quite another to abuse the trust the DM seems to engender.
Actually, “spam” probably isn’t the right term. “Spam” implies the communication is unsolicited, the contact unwanted and yet when I follow someone I expressly want to receive messages from them. So what is it then? I suppose it is pseudo-spam. I don’t particularly want to receive these sorts of messages directly on Twitter, straight into my inbox. Whatever it is, Twitter provides a simple solution: