Well Facebook lite application is quite conpact and consumes less mb than its actual application but it takes a little more time to load each and everything wether it is messages or home. It may be because it contains less data.
Ok its not much serious issue.
The major problem I am facing in fact all the guys using Facebook lite application would be facing is that we cant copy any text from any post uploaded on the Facebook.
Due to this problem it becomes difficult to save any useful thing in our clipboard.
Its a serious issue and Facebook needs to repair it.