The massive RFQ spreadsheets that come my way get examined for what will work for me. If there isn't enough information in the spreadsheet, I ask for it. If I don't get it, I don't bother with it.
One of my favorites is the reverse auction. Frankly I find it laughable, and usually I participate just for sport. A few years ago a well known bakery company invited us to partake of one. Since there were a few lanes that were of value to us, we engaged. We knew our marks and did not bid below them. Needless to say, we did not get the freight either. The lowest bidder got the award but had nowhere near enough equipment to satisfy the requirement, roughly 5% of the need. Subsequently the shipper called us and asked if we had the equipment to do the job, which we did. Everything was good until we got back around to the price issue. The shipper thought we should do the work for the lowest bidder's price and was quite put out when he was informed otherwise. It was a sour relationship from the start. In the end, we just walked away.
One of the best ones though was the H.J. Heinz auction a number of years ago. In the end a one-man-basement-office load broker out of Newfoundland ended up with a majority of the business. The only problem was he bid the rates so low he couldn't find any trucks to do the business. Most of you probably saw them flogged all over LoadLink. Major embarrassment for Heinz, the company that hosted the auction, and the load broker. Pretty much all of the carriers found it hilarious though ... LOL