Re: 1$ and 100 credits for designing my logo and banner
Banner ads are usually rotated (different adds will be shown at different times, depending on what the advertiser is willing to pay for) and interchangeable. The sizes have been pretty much standardized. A "standard banner" would be 468 x 60 pixels; a "toplist banner" (or "leaderboard banner") is usually 728 x 90 pixels. See this Wikipedia article for more standard ad sizes. To provide maximum utility for the purchaser, you'd normally provide a full banner and a vertcal banner (usually found in the sidebar of a text-heavy web site like a blog) and, depending on whether the site is in a market niche that thrives on toplist links, a toplist/leaderboard banner.
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