Users take their karma very seriously, and generally the more karma you have, the more trustworthy you are as a user. So before you start posting content, it can be a good idea to build up your comment karma by leaving lots of good comments and getting lots of upvotes.
Find other businesses using Reddit
Don’t be a business
Although there are examples of businesses using Reddit very openly (for example holding ‘AMA’ (Ask Me Anything) sessions where they invite questions from users), businesses who go undercover and submit the odd piece of content from unbranded accounts seem to have the most success on the platform.