Hi,
Anybody is actively promoting NP auctions through social media ? If so, can you post some good Facebook groups or fanpages with active members ? Other social media sites are welcome, too.
I usually share/post Flippa auctions, Sedo auctions, and similar..but never really NamePros auctions. Still, it probably wouldn't hurt since many of the members are probably on NamePros as well. Here are some groups..
Twitter is also a good place to promote sales.
Providing one has the followers and that some to a lot of those followers are looking for a domain/website.