Recently, I have seen some tweets coming from an account, like this:

Noticing the link, I went to Ad Plus Platform’s website and this is what they sell:

Paperless Flyer Distribution? Online, it is called spam. If anyone wants to advertise on Twitter, just use the system that Twitter has. It is definitely cheaper and the reach is wider. Doing this will more often than not leave a negative impression of the business that is being advertised.

By the way, this tweet does qualify as spam according to Twitter:

• Abusing the @ reply or @ mention function to post unwanted messages to users
• Posting links with unrelated tweets