Up to how many ads can i put on 1 page from adsense ? Also, if the maximum is 4 (example) can i put also other ads from other affiliate programs ? Thanks
You can put up to 3 ad blocks (the banners) and one adlinks unit on one page. You can put any affiliate program on the same page if they're not sexual or gambling-related, or uses the same contextual technology as Adsense.
Also, as long as your page isn't full of your affiliate's ads, Google get bitchy about you having too many advertisements. But, if you have enough real content, then that shouldn't be a problem.