Некоторое время назад получил два письма следующего содержания:
Hello,
I'm Finn and I'm contacting you on behalf of Mediastrasse, my SEO agency.
Would you be interested in placing an article on your site with a link to one of my clients? If so, how much will it cost?
The article will be unique and will fit your website's writing style.
If you have more sites, please send them over for a bigger cooperation.
Thank you,
Finn Schmidt
mediastrasse.com
Hi,
Nice to meet you 
I would like to ask you to post on your site a unique article that I will supply.
It will include a link to my client's website, which is in the online casino niche.
My client prefers that it will be posted just like any other article, with no sponsored tag and links should be dofollow.
Would that be ok?
Best Regards,
Finn
Натурально, отвечаю:
Hi. I think 50 euros. One-time payment. Publish forever.
Ну и все, в ответ - ни ответа, ни привета. Вероятно, это был спаммер, да и веб-ресурс по ссылке показался мне несколько легковесным, не внушающим доверия.