User blog comment:Annamisasa/The 102nd Annual Hunger Games/@comment-5082922-20130826234804

Remember there's both good things and bad things depending on the size of the alliance. I won't go over them all but:

Loners - No one will betray you, has no protection in battle.

Small Alliance - Small risk of betrayal, a bit of protection in battle

Large Alliance Bigger risk of betrayal, a lot of protection in battle.