I've been getting requests from people who want to write guest posts on my blog for years now, and the number of requests are accelerating...
Here's a typical example...
And I mean it's typical...
Short, link to my blog with the briefest of compliments, mention do follow links and a request for how much.
I mean there are some things in life that are just completely untempting and these requests are FIRMLY in that category...
'Would you like to trash your SEO for $20' - errr, no thanks!
In the past I used to offer to publish people's random self-promotional/ affiliate fishing posts for $500 but that stopped being amusing a while back.
Funnily enough these people do not want to pay me proper money to trash my SEO, which while not quite priceless, it's not worth the risk for a few squid!