An interesting variant on this is Tegus, which offers more affordable expert calls and makes their transcripts available to suppliers. For someone with an edge in asking questions, this is a downside, but for someone who merely wants to gather information, it's upside; they're free-riding on the question-asking skills of other people.
UpEquity enables home buyers to make offers stipulating that if their mortgage isn’t approved by a certain date, UpEquity will step in and provide an all-cash offer.