I have a few LinkedIn "connections" only with people I am really interested in and value, good peers. Instead of just anyone to jack up the number- which is a popular stunt.
I tried to add Dave as a connection, very long time ago. But it's only famous celebrities that are "on the list" lol. Didn't make it.
Also, making my connections visible to others is kind of shooting oneself in the foot if you are looking for work. You would likely have other peers, competitors to yourself on there and why aid recruiters? Why does knowing who you know matter? Seems like a zuckerburg strategy lol.
[...] Unprofessional to use your employer's computer systems to search for other jobs (and potentially a breach of contract) for one.
That is unprofessional? I had a boss (married) using on-line dating site, another was checking out Sunshine Girls - with company computer. I walked in to their office a bit too fast for them to hide it. ICK. I've seen co-workers do their on-line banking, shopping, stream music as well.
I'll look at jobs using an employer's computer when confirming an opening got posted, to confirm that lazy HR is going to replace that guy and not overload me more.
If no hiring action is being taken, that is unprofessional IMHO. Then I'm looking for a new job, on company time lol.