Signal Strength?

I'm looking to get into signals for the first time, and I was hoping to tap the group experience: do they work? are they worth the price? what are the small print items to watch out for -the traps and pitfalls. Do they work better on some currencies, at some times of day? Better to be out overnight or keep in there? Should I just use an automatic system and not place the trades myself?
I think the answers will be useful to all here.

They are worth it if you have enough money to trade them with. Ask the service how much money % you should make in a year. Then add up the cost and see if you have enough.