At first I assumed it was similar to multi master; one entry per user, but on sportsguru I saw few users entering multiple rooms, went back to check the rules on the promo page, nothing was mentioned regarding one entry only, so to make sure I contacted live chat, I was told that all entries made by a user count towards the promotion.
Anyway I highly doubt any of my 10 entries will be a winner as I made at least 3 wrong picks so far out of 6 on all of them.

I really like this new concept, has many similarities to fantasy sports, could be the next big thing in sports gambling.

Aside from the promotion, multiple entries in a similar event is much more fun then just one entry, for me at least.