I've run a successful WSO for quite some time now... since I sell a PLR membership, the $20 entry free to run a WSO is peanuts compared with the thousands and thousands it's generated.

I'd highly recommend running some WSOs, but don't expect much if you just throw up an offer then scurry off. Get involved in the forum, change your signature so each forum post has your info, and be quick to answer buyer questions.

Hope this helps!

Ronnie