[xkjkls]

Also reddit itself gives a huge number of ways for advertisers to access the reddit audience without paying for it.

[colinmhayes]

I think this is reddit's biggest issue. Astroturfing is more effective than advertising and it's cheaper too.

[granshaw]

Astroturfing as in hopping into a group and creating a post promoting your product? Have you ever seen that actually work?

Almost every subreddit I see bans any kind of promotion and even posting of links.