Nexobtc (nexobtc.net) offers copy trading. I copied a top trader. The copy trades often executed at worse prices than the original. When I asked why they said it was due to latency and liquidity. So the feature is broken or they are skimming. Either way I stopped using it.
Pros: Competitive fees|Segregated accounts|Social trading features
Cons: Some tools only available on higher tiers|Minimum deposit could be lower