The Complete Guide to LinkedIn Etiquette (for job seekers):

- Hide your activity, but make your profile public. Maintain a transparent public profile. You don't want to alert your current bosses of all this activity, lest they get suspicious.
- Maintain a transparent public profile. Make sure you remain as open as possible about your professional past.
- Get to know the people behind the position. Use your advanced search skills to find the hiring manager behind the position you're applying for.

Read this interesting article by Stephanie Buck @ mashable.com