Both communities send weekly newsletters to site members, informing them of recent activities and updates from their friends and contacts. You may have seen some of these newsletters yourself. (I just received one.)
Depending on your and your contacts’ privacy settings, you could get some free email marketing from these social networks every time you become active in any way within the site.
Here are a few activities you can do that may show up in the weekly LinkedIn and Goodreads newsletters (reminder: these newsletters are sent only to your contacts):
- Add a new skill to your LinkedIn profile
- Share a Tweet on LinkedIn about a conference you’re attending
- Change your job description or education level on LinkedIn
- Join a Group
- Review a book on Goodreads
If you’ve left your account inactive, get cracking! In under five minutes, you could put your name in front of a few hundred people.