I have a few sites, but no traffic!

At the moment I have a total of 8 sites, 7 of them are functional with cscups still in the making. My only site with any traffic is bwav.co.uk, where most of the traffic comes from league and ladder sites. Below are my sites with the estimated value of them (from dnscoop.com. The site with the most traffic has by far the highest value, it is also my largest site with 10,000’s of pages in search engines.

• fragbite.co.uk $21
• cscups.com $62
• simple-travel.net $144
• swimchat.co.uk $212
• arranwildlife.eu $310
• bonditobronte.com $412
• gsinfo.co.uk $850
• bwav.co.uk $5,427

I am stuck at the moment as to how to get traffic for the other sites. They are all lsited in search engines but don’t get much traffic for them.

Does any one have any ideas how to promote such sites?