If not, I come bearing wording, either to pop into 298 or to incorporate into a new FAQ. Ideally, the FAQ linked by the help symbol

Anyway, wording!
You can opt in to My Guests on the Privacy tab of My Account Settings. Check the checkbox next to My Guests and click the Save button. Please note that changing this setting will take 24 hours to take effect. After 24 hours, you will be visible when you visit journals which have also opted in to My Guests, and you will start to see visitors on your My Guests page. If, after 24 hours, you do not see visitors on your My Guests page, your browser may have cached an older version of the page.
To opt out of My Guests, uncheck the My Guests checkbox on the Privacy tab of My Account Settings and click the Save button. Please note that changing this setting will take 24 hours to take effect. After 24 hours, you will no longer be visible when you visit other journals, and you will no longer see visitors on your My Guests page.