It's a way for anyone to create trading bots- who's going to complain about bot manipulation if it's a free-for-all?
Pros:It's an easy way for anyone to receive alerts about their coins' performance, no matter their tech knowledge.
Cons:Most seem to have been addressed in future update plans (live trading, etc.)
I still think the market is in it's infancy, the ability to build and test strategies for trading is going to become an increasing dependency.
Pros:The few other similar products i've tried are very limited or don't work well. Signals seems to offer the most flexibility and power.
Cons:There are many future features which need to see the light of day.