Yes, I agree with fudjj there. eBay is still in the lead when we talk about site traffic. It's clearly shown in the chart on powersellersellersunite.com where eBay takes the lead followed by eBid, Bonanzle and eCrater :
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But then again, Bonanzle has grown and quite rapidly, imagine in a span of just 1 year they now have 100K members. They have an average of 10,000 members joining every month, and on September 13, Bonanzle scored 1,000,000 unique monthly visitors for the first time. Currently Bonanzle offers about 2.3 million items.
If you like to read more here's the link:
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Happy selling to you all! Cheers :)