yes thats exactly what it is.... if you hold the mouse over where it says "bidder 1" or what ever... it will tell you how many bids they have made, how many with this seller and how many they have won with this seller...
when i was bidding on my pitpro, there was someone putting in dummy bids on every bike for like a week, and they had bid on over 100 items in the last few months and 96% of the items were from this same seller...
dodgy, but hey they start the bidding at like $1 .... no way are they going to let a pitty sell for like $5 if its a slow day lol