Weird Facebook Thing

[Fallen]

While on facebook I accidentally hit the "ctrl + a" and everything got selected on the homepage and then I noticed something weird. On the left hand side under the second "More" in the "news feed" heading I saw that "SO : 306.27 →" was highlighted. I wondered what it was but I myself have no idea. Does anyone here know. Im just really bored and curious as to what it means.

 

[Keral_Patel]

Might be some debug information kept there by some developer.

Some have habit of putting this kind of debug info out while some output HTML comments and then view the source to see how the application is working.