You bronies have your own chan boards now yet you still want 4chan.
Wow, don't you bronies have like over 5 pony chan boards, a stuffload of official pony forums and a stuffload of unofficial pony forums that have an off-topic section which you use to spread pony magic?
I can browse a few random forums, check their off topic section and find a huge ass pony megathread with about 5,000 - 10,000+ pages.