The genesis block has been mined 1 day ago before they've announced their coin on bitcointalk ( CPUchain have announced on bitcointalk 4 days before they mined an genesis block )
2. Poor homepage roadmap
Lightbit doesn't have any identical roapmap or features compared with CPUchain
3. No Whitepaper
Lightbit doesn't have any whitepaper although it is a clone of CPUchain
4. Developer's identity are hidden
No public identity for developers, likely to be a scam.
5. Copy of CPUchain's work
According to the community manager ( AL!CE ), they are planning to clone the mobile wallet, mobile mining application of CPUchain's.