First I will say that this is a free service and
you just need a homepage to be a member.
You must add a HTML at your page (I recommend at the top of your page, if you do that, you will be a topmember). I will look at EVERY page, and if I can't find my banner or if it's hard to find it, I will delete your banner from my page. I will also go back to all pages who have joined gamember and look if my banner is gone, if my banner is gone, I will delete his/her banner from my page. You must add my banner at the page I will link to, it will be much more easier for me to add your banner then. So PLEASE, don't add my banner at your "link-page", add my banner to your mainpage and I will link to your mainpage.
Your banner can be animated and transparent and must be less than 20k. Your banner don't need to be 400*40 pix, but if your banner isn't 400*40 pix I will do it to 400*40 pix (test here). So almost every banner is OK. The HTML you will get must be exact like the HTML I will give you (the HTML below). You must add this HTML (copy and paste) in your page:
If you don't have a gamepage, you can be a member, but you will get a category who is Not games/"your name". "Your name" is a name you choose (it can also be, words like "free stuff" or "banners" or "learn java").
To join, click here.