Among the noteworthy items today in the Chronicle’s digest of nonprofit blogs:

• Eight signs that an arts organization isn’t ready to start a blog.

• The difference between a “high-performing” and a “high-impact” nonprofit group.

• Why don’t more charities ultimately aim to put themselves out of business?

• Resources for nonprofit groups that want to put technology to use for their cause.

• Why Planned Parenthood has been successful in using social media to advance its mission.