Decide what belongs on the list
Include bugs that affect many people or block a common task. Leave out cosmetic glitches and anything you will fix this week.
Word each entry the same way
Say what the customer sees, who is affected, a workaround if there is one and the status. Avoid internal ticket numbers and jargon.
Link it from support replies
When a ticket matches an entry, point to it and offer to tell the customer when it is fixed. Tag the ticket so you can count them.
Keep status honest
Use a few clear states such as investigating, fix in progress and fixed. Never say soon without a date you control.
Remove entries when fixed
Mark the entry fixed with the date, keep it a week, then retire it. A stale page teaches customers to ignore it.