I would use the search function but I have no idea what this kind of pedal is called. I've seen them on a select few bikes in various bike galleries, the ones that are clipless on one side and either clipped or flat on the other.

1. Do they have a specific name?
2. What's a good brand to look for? I've heard good things about Crank Bros, but unfortunately it appears they don't manufacture this kind of pedal. Either that or what's required is a modification of the pedals I have.
3. Where to buy? I've used eBay, Amazon, Ben's Cycles, and Tree Fort Bikes as online resources when I'm not at Citibikes.

Much thanks,
Wheels

The clipless/clip pedals never made sense to me. If you want them so that you can either ride with your clipless shoes and sometimes with other shoes, why have the clips? The clips hit the ground when you use the clipless side, unless you take the clips off.

I also never liked the platform side of these types of pedals, but Shimano has just come out with a new one, the PD-A530. This one is a clipless/platform that does not accept the clips and I like the platform better. I haven't used them yet, but I am planning on buying them soon. JensonUSA has them and you can find them on eBay.
Shimano also has the PD-M324. This is the more traditional clipless/platform pedal that accepts clips. You can find these in a lot of places, Nashbar, Performance. Performance and Nashbar also has their own version of these.

Can't help you with your questions but I do offer a warning. My bike came with SPD/platforms originally and I hated them!

Remember that one side will naturally be heavier and fall down. So you will always have to flip your pedals over after every stop if you use the lighter side. This was intolerable for me, especially since clipless/platforms feel pretty much the same if not clipped in - I had to actually look.

SOS is right the clipless one side (platform the other) are a bit of a pain as you have to roll them over with your toe to clip in.

MKS makes quick release pedals (no wrench, pull back a ring and off comes the pedal). Buy two pair; one clipless and one platform then just switch them as the ride demands. Good for deterring theft too as you can take your pedals with you when you lock up your bike.

The Performance Forte Campus pedals are on my Tailwind and my singlespeed hybrid. They are great if you occasionally ride in sneakers or hiking shoes, etc. They are compromise pedals; flipping them to the correct side is not a major issue. By the way, the plain side has a cage, not a platform.
Using them as clipless/toe clips? Does anyone do this? Sounds comical.

I use Shimano M324's on my greenway bikes and I love them. It took me a little while to get used to the pedals being upside down a lot but you can't beat them for convenience.

Yes you can!

I prefer the PD-M545. It's one of three models that's SPD and platform on BOTH sides. They would not be a good choice when wearing business shoes, but they're fine with sneakers and hiking boots.

I have to politely disagree. I have Shimano 545's on my mountain bike and although they are absolutely bulletproof pedals (I've had mine for almost a decade now without a single problem!) but they are not comfortable to ride in if you aren't wearing SPD shoes. She SPD part sticks up in the middle of the pedal and makes for an uncomfortable ride.

I took some pictures showing how far the SPD part sticks up above the "platform".



I'm not saying tls is wrong, but I personally find riding them in "street shoes" to be very uncomfortable.

I'm digging the M324s. They're affordable too. Are Crank Brothers Mallet pedals (any versions) comparable to the M324s? What of Time pedals?

bump

Yes, I'd say that the Mallets are comparable. Wear a soft-soled shoe and the spring bails aren't a big deal.

I'd wear an MTB or touring shoe for longer trips, but regular non-cleated shoes work fine for poking around town.

i just got a set of speedplays and LOVE them. they hold solid, the large amount of play is nice on the knees.

in relation to this thread, i've found that the normal round platform works fairly well as a pedal with normal shoes (non-cleats). previously i had been using spd's w/o a platform with normal shoes occasionally which didn't work nearly as well.