I do link exchange request manually, but I do not offer poopy pages
I first analyze a website before requesting for a link exchange. But I do get a lot of spammy link request emails from link farms, some of them even change the color of the anchor text so that visitors won't notice the link. What's funnier than that are those who call themselves
SEO experts offering me their cr*ppy pages with gray bar, useless content, filled with outgoing links and (worst) uses "nofollow".