I'm looking for ways to build my lists for various sites, and I'm learning about ad swaps and solo mailings.

When I did a search here to see if anyone is doing ad swaps I only found 2 threads mentioning it -- both much older (i.e. 2002). I also found 2 threads for solo mailings (one was not a pleasant thread).

Is this something that is frowned upon in the ABW community or do we just look for these things elsewhere? From what I've seen, WF is one place to look for this type of cooperation, but I am more comfortable here than WF at this point since I spend more time here.