I have no problem with popups, popunders or "skip" ads,if they are one per visit.
The only thing I worry about with skip ads is if it comes between an offsite link and an items download page.For instance...If click on a download link at renderosity then there is an ad i must skip to get to the download page.Most sites require you to at least link to the page where an item can be downloaded.
The quality of the downloads/art/tutorials is more important I belive.If you give the people what thay want/need they will live with the annoyances.Quality Standards need to be set, and the user agreement needs to be enforced.If I was an ad rep I woudn't advertise at a site that has multliple copyright violations,poor unorganized content,etc.
Edited by widaca on 08/12/07 03:15 PM.