I generally don't respond to recruiters because they usually don't know what the hell they're talking about. They see the word "Javascript" on my LinkedIn profi

I generally don't respond to recruiters because they usually don't know what the hell they're talking about. They see the word "Javascript" on my LinkedIn profile and then pitch me Front-End Development positions (despite the fact that the last time I held that title was in 2008) and ignore the fact that my primary skills in the last 6 years have been back-end related. Frustrating. So I generally don't reply. This email from "the CEO" was well written and actually took into account my most recent activity. The combination of appearing that it came from the CEO and that they actually did some research suggested that they actually wanted me, and weren't just flooding everyone with recruitment letters. But then there was the whole bait-and-switch thing, so... I'm really frustrated right now.