For bbs token price to go up , there must be more buyers than sellers, so basically there must be more people who see value in BBS project .
The higher number of users doing Engagements Mining increase the supply of BBS tokens.and if we all just mine without buying BBS tokens the price won't change much.
Engagement Mining can lower the price of BBS if we all decide to sell our tokens, because this increase supply in the market.
If our experience of using BBS has been amazing so far and want the BBS tokens bags we hold to amount to something we may need to start buying BBS tokens.