There are two types of free web server which is to allow access to the cgi-bin directory and free web server that does not allow access to that directory. With access to the cgi-bin then we can put our own script. For example, the script for the guest book, mailing lists, counters, etc.. With the script that made you can make the guest book without the need dijejali with the ad.
But before upload (send files to the server) you can complete your web site with:
Guest Book
Netter, so that the drop in to your site can leave messages, critics or just comment on your web.
Counter
With the counter you can find out how many people who have visited your site.
Mailing List
If your site it is weight you can complete the mailing list. So people who registered on the site's mailing list you will know (for example) when the site is updated