As usual I will probably make this a bit longer than I should, LOL I type fast, but I will look at this in past and present - what I am best at is being a radio announcer, and I haven't been on the air for a few years - maybe once I move back to Calgary I will work my way into getting back on the air again so here's how I'll answer this in that perspective :
What are you good at? Being on the Air - Radio
What do people say about you that you don't mind hearing? Comments about my broadcasting skills such as "that was the best interview I have done in a long, long, time" - Chairman of the Astronaut Selection Committee - NASA
What do you do, on your own, that benefits others? Interviewing Non-Profit Organizations, Conducting TalkShows, Reading Traffic Reports, News providing public service information to my listeners.
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Since I haven't been doing radio, the last few years here is how I'd currently answer these questions:
What are you good at?
I'm better at planning vacations than most travel agents.
What do people say about you that you don't mind hearing? That I am creative and make good pottery.
What do you do, on your own, that benefits others?
Everyday I try to say something uplifting and positive to someone on tPF that needs their day brightened. I also maintain a website with all my cruise travels and answer questions to other travellers on the cruisecritic boards.