1) If you were to consider replacing your bikelight what features in a new bike light would you look for? Be specific if possible.
Adequate brightness (to be seen AND to see), economical.

2) What's the worst feature on the bike light you're currently using? Second worse?
Actually, I'm quite satisfied with my current light. I guess I wish the battery pack (gel cell) weren't quite so heavy.

3) What's the best feature on the bike light you're currently using? Second Best?
BRIGHT! 10 watt single beam - plenty for my needs.
Rechargeable battery - I'm into my 3rd year of using it with no additional $ outlay.
(I'm devoted to rechargeable batteries... but I hate "memory effect." My current light has a "gel cell," and seems NOT to have a memory, but I have to be careful not to overcharge. Hassle-free rechargeability with a decent life - 1.5 - 2 hours minimum - is VERY important to me.)

4) Have you ever used a helmet mounted bike light? If so, do you like it? Why or why not?
Never have used one. I'd certainly be willing.

5) When you use your bike to commute, do you leave your bike exposed to the elements (i.e. rain, sun, vagrants)? Do you leave your light on your bike? If so, has it been stolen? Do you fear it will get stolen?
It's out of the precipitation, but in the cold temperature. I leave the light on. I worry about it being stolen, but it hasn't been.

6) Do you find your bike light to be effective in alerting drivers of your presence when you're on the road at night?
YES!

7) Do you find your bike light to be effective in appropriately lighting your path at night in order to allow you to bike at the same speed as you would during the day?
Yes.

8) Rank the following bike light criteria in order of importance
Visibility to motorists 1 - most important
Theft proof 6
Satisfactory illumination of your path 2
Maintenance free(replacing/recharging batteries, replacing bulbs, broken mounts, ect...) 4
Appearance
Size (Compact vs. bulky) 5 (weight more than size)
Cost 3
Environmentally friendly(mostly the batteries) 7

9) What kind of bike light do you own (i.e. brand, model)? Would you recommend this light to a friend?
Planet bike. Don't know the model - it has a 10w lamp with a quick-release mechanism, a rectangular gel-cell battery that hangs below the top tube in a little black nylon bag. Nice coiled cord, with cord-mounted push-button on-off switch.