I've notice that properties are being sold with the printed line "pending at ink" which means the seller accepted an offer before the property gets released on MLS. 

What I believe is really happening, is that properties are being held back purposely from the public market and hogged to limit other people from buying it, which could have a negative effect on a realtors commission. Realtors will get the listing and instead post it to the public for fair game they use their personal contacts to sell the house. I think this should be banned and at least have a 2 or 3 day mandatory MLS posting period before an offer is accepted. 

Although Iv'e seen this many times. I only mention this because the houses that are selling with the "pending at ink" label, could have sold for easily double the amount in a matter of days.