This, wait... no, sorry, not this. Joking aside; the first button is one that deselects all contacts and they mention the numbers of connections to be created right in the top. Here it is: http://i.imgur.com/3qiT140.jpg
I do hate LinkedIn but for very different reasons, like pretending is a safety measure to not connect with strangers and then charging you for a premium service for direct-emailing anyone you want.
Granted it does allow you to deselect contacts and does (discreetly) indicate the interface is obscuring ~100 people it's defaulting sending invites to when you go to the next step, but you can understand why Joe VP might not expect clicking the blue button to send invitations to the mistress, disgruntled former employee and rival contractors who are hidden away somewhere near the bottom of the list.
My problem was that everything you need on that page is along the left-hand side. The number of contacts pre-selected is pretty small, and off to the right. I was breezing through this, trying to find old friends (and it worked! The first contact suggested was someone I've known for ten years), and I just missed that little number line on the upper right.
Ideally, it should throw up a warning for trying to add anything over maybe 50-100 accounts, like a simple "Are you sure Y/N?" before allowing you to continue adding that many.
I do hate LinkedIn but for very different reasons, like pretending is a safety measure to not connect with strangers and then charging you for a premium service for direct-emailing anyone you want.