Friendster may have taken too much time rejoicing its success some years back. Five years ago, it was indeed the hottest site on the web. Today, it continues to be around but it has obviously taken a backseat to Facebook.
Noticing this dip, you can see that they are trying to win back their subscribers. A lot of accounts have been abandoned and most people are on the Facebook bandwagon.
This should serve as a lesson. No matter how successful you are, do not let your guard down. Once you do, you will notice that it may be costly. Such is what Facebook is experiencing right now.