Page 121 - 42 Rules for 24-Hour Success on LinkedIn: Practical ideas to help you quickly achieve your desired business success.

You can view the status of your invitation from your
LinkedIn Inbox.

Limiting Invitations
As mentioned previously, the goal of LinkedIn is
not to gather connections for connections' sake.
Instead, it is to build out a quality network.
In the process of doing this, you may find that you
want to limit the type of people who can connect
with you. For instance, if you have been receiving,
or simply don't want to receive invites from people
you don't know, you can turn on LinkedIn's invita-
tion filtering feature. The basic effect of this is to
allow you to create a "white list" of people that are
only found in your uploaded address book.
Since LinkedIn notifies you of all incoming invita-
tions by default, you will need to adjust this setting.
If you select the "Only notify me of invitations from
people in my 'Other Contacts' list" option, invita-
tions sent to you will not appear in your email inbox
but will be diverted to a "Blocked Invitations" page.
If you want, you can check these whenever you'd
like.

Chapter 23: Understand Invitation Etiquette 105