In my evangelism over LinkedIn, I sent some information to some of those 'trusted coworkers', or in my case, former coworkers.  One wrote back with a question, since I'm now a bit of an expert. She'd taken on a seasonal job and wasn't sure if that should be included on LinkedIn.  She knows it's not directly linked to her chosen field.

My take is this; LinkedIn is not MySpace. What you put on there should be selective, and used to cultivate your network.  If the position could lead to useful contacts, then by all means use it.  If not, don't. More likely than not, she's not going to want to add that position.

It's like adding people to your network.  Those people with 500+ connections probably don't know those people they've connected to, and like LinkedIn says, you want to connect to people you know and trust.  My personal philosophy is I won't connect to someone I don't personally know, face to face, with two exceptions.  Those exceptions are 1) I've worked with that person in some capacity remotely, or 2) Someone I trust strongly suggests we get in touch. 

After all, there are 10 million people on the site. I don't need to directly connect at the first level with all of them.  As it is, in my three-tiered network, I already have 430,200+ people in my network, with 100 people in my first-tier. That's a good enough reason for me to keep that first tier more of an inner circle of people I actually know.

Makes sense, yes?