Google's persecution of link sellers has resulted in guest post spam, instead of directly purchasing links, people are writing mails requesting guest posts with a link, which has the same effect on the business, he has to spend money
Others get irritated by the guestpost requests
This guest post spam is getting out of control:
"My name is Maria and I work with Roto-Rooter. Out of curiosity, my team and I were wondering if you’d be interested in publishing a comprehensive article written by one of our plumbing experts at Roto-Rooter?"