To answer your questions, as I am unsure which one you are referring to, "Is this still going on?" or "Is necroposting a bad thing?":
1. Yes, necro posting is more often than not a "bad thing," as it can construed as poor "netiquette" becuase the topic has "died" (no one has posted in the topic for a long time and therefore there is probably a reason everyone stopped posting, such as the topic no longer being relevant. Necro posting is often only viewed as acceptable if new information is being brought to life on a topic, or if the OP (original poster, the person who created the topic) bumps it back up, as it is their thread.
2. It appears this deal is no longer going on as the link in the original post used to lead directly to the page for the free gloves, but no clicking on the link leads 0nly to the company's homepage and there is no mention of this deal on the home page.