It's very simple
1). Without Registration
2). No Click Needs
3). Without PHP Code
4). Only HTML Code who use in all Sites
Note:-1). First add html code on ur site and write in my guestbook. 2). Ur site will be added with in 24 hrs. 3). We check daily ur site. If u cant add html code on ur front page of ur site so we can't adv ur site and deleted from our list.
