Remember to save your spamming material!
For some of you it may already be 2015, in which case, the operation is 3 days away, January 4th!
Have at least 50 pictures. It seems like a lot, but in reality it won’t take too long to dispense them into a board.
4chan has CAPTCHA, where you enter in the words/numbers in an images. Remember that.
Keep your pictures varied. If you’re mainly spamming with fandom material, have some from different fandoms. If it’s social justice, spread posts that target racism, sexism, ableism, homophobia, islamophobia, and other forms of discrimination. Racism and homophobia seem to be especially problematic on 4chan. Cute images are good to use as well.
If you see other Tumblr users spreading their images on the boards, comment on it, no matter how generic. 4chans system bumps active threads to the top. (i.e. if thread #1 is getting replies, and #2 gets none, #1 will get bumped to the top of the feed, while #2 will go to the bottom). This is really important because there can only be 300 threads on a board, otherwise it will be deleted.
Do not post selfies. Once again, they can be used for photoshopping purposes.