I think trying to integrate facebook like buttons and Google+ +1 buttons in replies will really make the forum more social network friendly and helps to get more members to the forum There is already a like button for replies. but I don't think it is that much effective What is your opinion ?
The like button is simply for the forum. It's a simple way of saying thanks to someone who has helped you. If it gets overused though it becomes slightly irrelevant. There is a button for facebook, Google+ and Twitter at the button of every page already. So if you want to share a page just go vote at the bottom of the page
Well I think adding like buttons ans share button in each of the post/reply is of no benefit... a button at the bottom of the thread will be good enough I think.. Which I see is already there