You can assign a flag on the message.
Every message posted to a Conversation or wall shows a flag icon that tells you instantly whether a flag is assigned on the message. For example:
If the flag icon is hollow (), then no flag is assigned on the message.
If the flag icon is not hollow ()—that is, it's a solid color, possibly with secondary marker on it—then one or more flags are assigned on the message.
There are several types of flags:
For Your Information (flag with "i")—Look at this when you have time.
Please Reply (flag with black arrow)—Look at this, and let me know what you think.
Please Reply - Urgent (flag with red arrow)—Look at this now, and let me know what you think immediately. (An email notification is always sent for Please Reply - Urgent flags.)
To get more information about a flag, you can either mouse over the flag to see a tooltip (for example, "For Your Information flag for another from Name.") or click the flag icon to see all the flag assignments.
To manage flags on an individual message:
To remove a flag assigned to you, click .
To quickly assign a For Your Information flag to someone, click the flag next to the person.
To assign a particular flag to someone, select the type of flag in the drop-down list next to the person.
To quickly flag everyone, click Flag All (in the Not Flagged section), and select the type of flag you want to assign.
To quickly remove all flags (whether assigned by you or not), click Clear All (in the Others Flagged section).
To remove a particular flag, click next to the person.
To search for someone, enter part of the person's name in the search box.