If the target site smells spammy from the look or sound of it, you might have to use the "bank shot" approach where you use a 'prestige' type site as a buffer url to bring Reddit readers to your site. How about creating or editing a nice youtube video, wikipedia post or social media community that points to your url. Your reddit posts point to the video url or wiki page etc, so your link doesn't look spammy. Make sure your post is informative with a link to match, and this should keep you in their good graces. A similar traffic funnel can be created to draw visitors from Quora, Yahoo Answers, or similar big site on this basis.
One alternative variation of this is to use web properties whose page links are no-follow, but have very good metrics, high traffic and basically auto-approve your posts. Use them instead of a TLD money site to post a well written SEOed article, and put a link on them direct to the offer landing page, then (if you want) rank the property page directly. The link path from Reddit could be: Subreddit or informative Redditt on fascinating movies, to interesting video or short wiki page on the same topic, to your money (web property) page. Complex, yes, but if it helps your traffic funnel from Reddit stay up, that's what matters.