Greetings friend @engrsayful

I am glad that you have shared with us your experience and knowledge about using Steemit's internal marketplace.

Steem Power delegation can be seen as a for-profit investment because the accounts that receive delegations, usually provide good votes as benefits, such is the case of @upvu, which in addition to votes , delivers an amount of daily Steem as a reward. but we also have the delegations for support purposes, this happens with community accounts, which seek to provide support to all who participate in it, regardless of whether there is delegate or not, such is the case of @hive-193637.

To delegate we can use SteemWorld and Steemyy.

I hope my answers have been helpful to you.

Thank you for sharing with us on our channel.