When staking TheGraph (GRT) you are securing the network with the additional benefit of compounding your GRT!
Staking GRT is the process of holding GRT "stake" to partake and support the operations in the TheGraph network to receive rewards. In order to be a "Validator" and participate in these operations, one is required to maintain a server running continuously, technological knowhow, experience, and have a significant self-bond (surety bond).
This is where P2P Validator comes in, we allow GRT token holders to forget about all the heavy lifting i.e maintenance, surety bonds etc. by "delegating" their holdings to P2P to receive these rewards. We accumulate users' stake and act as a major indexer, receiving and allocating staking rewards between our users pro rata for the delegation.
Users that chose to stake with P2P maintain full custody of their GRT at all times and P2P will never have access to them.
The current APR for staking GRT is 11% with a fee of 8%, if I delegate 1000 GRT to P2P:
Reward: 1000*11% = 111 GRT
Fee = 111*8% = 8.88 GRT
Estimated balance after 1 year = 1000+111-8.88 = 1102.12 GRT
By simply delegating my 1000 GRT as I hold it, I will have supported the network and earned an additional 102.12 GRT after 1 year.
Please keep in mind that the APR specified are approximate and changes along with network conditions.