More seriously,this is not a mere UX problem. This isn't a problem with colors not matching, with poor navigation, or with anything else.
Absent any other information, this site appears to be a way of fishing for email addresses. That's the long and the short of it.
I am not just a string to send messages to. I am not just a networking opportunity. I am not just an entry in your preferred database.
I am a developer, and I don't like it when sites treat me otherwise.
I thanked the author for his (very fast) response.
I'm sorry about the tone of the post, but frankly we can't let this dehumanization and arrogance towards users (and worse in this case, fellow developers) slide.
EDIT: Note also that, had he simply posted a good article (which it was!) without the shameless plug, I would've said nothing. If the plug had linked to a page that had anything other than email scraping, I wouldn't have complained. But the linked page was so offensive that it deserved calling out. Let this be a lesson for you startupy folks: don't cheapen a good thing with a bad plug.