Check with rangers or others involved the the areas you intend to hike in. Some of our state parks have volunteer associations tied to them (because the state can't afford to pay all the employees they need) that lead hikes where you could meet a hiking partner. Other groups that lead hikes are native plant societies, bird watching groups, and community colleges sometimes have classes that go in the field to study their subjects (usually, plant, animal or geology related).
"Bicycling is a big part of the future. It has to be. There's something wrong with a society that drives a car to workout in a gym." -- Bill Nye
Or, alternately, a hiking-specific website. I have had much good luck with a climbing forum in finding partners. Obviously you must use some caution, but it has worked out for me. You do have to look at it sort of like dating, though. You give someone a try, and they might not work out, but who knows, maybe the next will...
Jolt, if I remember, you belong to the Worcester AMC chapter. Why don't you check with the Boston chapter? I'd also second trying to post something at Eastern Mt. Sports or REI.
I'd hike with you, but I am a slow hiker and you'd be frustrated...
I think they post their trips on the trip planner thing on the AMC site. It's very confusing to use, which is why the bike committee doesn't use it... could you switch your membership to the Boston Chapter? That way, you would get the MUD, which is a little more up to date than Outdoors, because the publication deadline is a month later than Outdoors. I've heard the HB trips fill up really fast. If you need a contact, you could try to email Chuck Cafarella. He used to be the chair of the bike committee and now he is very active in HB; tell him you are an aquaintance of mine. Also, the Boston YM group does lots of hikes.
Good luck!
Robyn