If the landing page looks like a Fotka or Facebook login form - leave the page and do not enter any data. This may be an attempt to take over your account. Remember to report such a page using the contact form.
Check if a padlock sign appears in front of the target page address in the browser window. This means that the connection is encrypted. If not, leave the site immediately.
Be careful with messages about places where your Photos or other data are 'published'; attackers use a similar method to redirect the user to a page that pretends to be the Fotka or Facebook login form.
Do not react and do not click on links from pages that shorten links.