In the latest NLM Technical Bulletin posting is a full description of recent changes to MyNCBI. These changes include the ability to share your individual saved collection(s) by changing your settings to public. If you want to keep them private no change is needed. You can also create your own customized filters. A full explanation is given in the May 29th posting.
If you’re interested in more information about MyNCBI go to the section in the online PubMed Help Book. This is a complete overview from setting up your account to managing your settings and data.