Your Relay Token is a new Smart Token with two connectors, each with 50% weight, one holds a balance in your token, the other holds a balance in BNT. You deposit both your token and BNT into your Relay Token.
The amount of tokens staked has a direct impact on the type of transactions that people perform on a Relay. The total value of the tokens that are staked in a Relay Token's connectors is known as its liquidity depth. Having a higher liquidity depth attracts transactions of larger amounts, while a lower one limits the size of the transactions users will want to perform. The reason for this is that price slippage is calculated using the size of the transaction relative to a token's liquidity depth.
There is a minimum staking of 250ETH for Ethereum based tokens to be listed on the Bancor discover page and a minimum staking of $10,000 for EOS based tokens to be listed on the Bancor discover page.
Additionally, this value can change over time by either buying more Relay Tokens with either connector or by selling Relay Tokens in exchange for either of its connectors.