If you go to a member's profile page on the vintage site, it shows their status as online/offline right under the "send message" button, but this feature wasn't carried over to the new site. It's a minor issue, but it was helpful if you were wanting to send someone a PM while you knew they were online (especially if you had a question and were trying to get a quick response).

Yup, I noticed that as well, it's a good feature.

The lightbulb isn't enough?

I don't even think I've noticed that bulb before lol. While yes that's nifty, it'd still be nice for it to show up in their profile as well.

The lightbulb is fine if you're sending someone a PM directly from a thread that they posted in, but I normally just use the directory search which gives you a link to the member's profile page. On the vintage site it says "This user is: Online/Offline" right under the "Send Message" and "Start Trade" buttons, but that status bar wasn't carried over to the profile pages on the new site.