You simply have no idea what a third world country is.
"A Third World country is a country whose views are not aligned with NATO and capitalism or the Soviet Union and communism. The use of the term "Third World" started during the Cold War and was used to identify which of three categories the countries of the world aligned with."
Please get your facts correct before accusing other countries to be poor.
As for Signature campaign spammers, the could simply buy accounts of Hero Members and keep spamming. The only possible solution is IP checks.