It's chicken and egg. First off your front page, what is it? It's no use to anyone. Advertisers don't want to advertise on useless pages.
http://freebitcoins.pw/faucets/ is more useful than
http://freebitcoins.pw/ why is that? Why not make your front page USEFUL then when you build traffic people will approach you to advertise rather than think "here's a spammy page with no content and 3 ads"
The same ads are displayed on every page, so I'm not really sure what your point is. There isn't much to put on a homepage for the index of a site like this, unless you have suggestions...?
Also what are your stats? No serious advertiser is interested unless there are stats.
The bitads page has stats.
If I were you I'd approach the various btc gambling sites as they are making so much money that they can afford to make mistakes with advertising. Also it's always better to run house ads rather than placeholders. Placeholders look desperate. Maybe approach some sites and offer them a free 1000 impressions, build up your traffic and then later they can bid.
You've made good points, I'll change some things with the site's advertisements.
Starting now.
If you want a free advertisement for your site to be shown when there are no bids on the adspaces, please PM me.