Well, Jack ... one of the reasons why one might have problems trying their hand at JV Marketing may be due to them not entirely having honed and precised their own Onlike self and product brand before attempting to network with others ... what are you bringing to the table?
I don't know very many successful JV Marketers that are not already relatively successful Online business owners or affiliate marketers ... which is why I have pleaded with folks in this community from Day 1 to not put the cart before the horse ... don't venture into JV Marketing unless you have enjoyed reasonable success Online, individually.
My advice ... get your house in order ... work on your self and product branding, hopefully raising your 'celebrity factor' in the process ... take something you're especially good at, and bring it to the table along with others at your level to work together, co promote, and brainstorm.
And by all means ... if you do decide to take the Web 2.0 road, PPC, etc, find a way to build a list in the process. What a waste to spend all that money looking strictly for affiliate sales ... and fritter away the opportunity to grab the leads!