Yeap both bidding directory scripts are good. But as op said he want to know free one so go with Linkbidscript as its free one. Phplinkbid is paid one but its worth to pay for that script. Choice is yours. DON.
I use both phpLinkBid and LinkBidScript. I think phpLinkBid has more Features, is more Flexible than LinkBidScript, and is worth Buying (compared to LinkBidScript being Free).
- Just so you know, phpLinkBid and LinkBidScript both use PayPal, and send the Link Bid payments to your PayPal Account.