>>How do I define the area and/or building space to be rented?
You can use 'subdivide' to section off bits of a land parcel (use View Property Lines, ctrl alt shift P toggles it) Note that prims will correspond to parcel size.
>>Do I need to subdivide the land for each space?
Not really. You can just 'assign' prims and hope that nobody will use more than they are supposed to. However, in practise people tend to either accidentally or unfairly exceed this limit quick.
>>Is the Hippo system appropriate for this use?
I've never used it, but I'm pretty sure it is. Check some more...
>>How do I assign/control prim use for the rented premises?
Either by assigning a parcel, or just coming to agreement - and then deeding your land to a group. You can then invite renters to the group, allowing them permission to create prims on the land.
>>Are there construction issues I should keep in mind when creating the buildings in order to rent the space?
Yes, many. Mostly though, you want easy access and plenty of room for avatar 'camera' angles - that view we all have from over our head. Some might argue that doing 'just another mall' might be a bad thing - if you can avoid this via architecture, design or whatnot it's worth a try.
>>Are there other things I should be aware of?
Yeah... first off, for the time you spend, unless you are making a humoooongous mall it's probably not going to be 'worth the money' whatsoever. Second - once you have tenants, you are gonna be logging in a lot. Even when you don't want to.
Expect to be pestered, shorted on rent, mistreated, you-name-it. If you *still* love it... go for it. Reconsider starting up if there's a good chance you'll be sick of it in three weeks - others will build their dreams in your mall, and will be counting on you.
Last of all - good luck
