In the long run - Bad.
Too many people are jumping in this, thinking this sounds like easy money and they're gonna get rich too. They then reg crappy names, over price them, and then spam endusers to death with their over priced junk, that just ends up leaving a bad taste where endusers feel domain sellers are scammers (another growing group of newbies) etc. Also, as they hear that they should buy aftermarket domains at auctions, they see a name with bids on it and jump on to bid too (just because), thus raising mediocre names to stupid prices. They then are stuck with names that won't sell for what they paid, drop them and domaining, and gripe about the whole process. Unfortunately there's nothing that can be done, as they'll keep coming, more and more, and the domaining waters will keep getting more and more muddier and sadly pricier. The only people really happy to see more people coming into domaining, are the registries and registrars. imo.