Only if you care about being included in search engines.
They will show up in Who's Online and you can also look at their last active date in Manage members in the ACP.-How do I know if they are showing up ?
They are enabled by default-If they are beneficial, do I need to 'ENABLE' them somehow ?
By having lots of substantive contentand if beneficial, how to you attract them ?
Depends on the BOT and on your Board content-How often do they show up ?
I may have played with the BOT enables etc.....if they are beneficial, do I need to 'ENABLE' them somehow ?
They are enabled by default