"Does Kindle lending limit you, in some way, to lending to certain people, though?"
Nope. That would require that Amazon have some way to investigate whether someone was really your "friend" (how is "friend" defined?) and be willing to spend the money to carry out the investigation. Not likely for a $1.99 ebook.
Perhaps they could limit you to a list of friends (a maximum of ten or whatever) but that wouldn't allow you to (e.g.) lend programming books to one set of friends and novels to another.
Nope. That would require that Amazon have some way to investigate whether someone was really your "friend" (how is "friend" defined?) and be willing to spend the money to carry out the investigation. Not likely for a $1.99 ebook.
Perhaps they could limit you to a list of friends (a maximum of ten or whatever) but that wouldn't allow you to (e.g.) lend programming books to one set of friends and novels to another.