SMS Obama:

The White House has set up local SMS short codes for people to send their messages:

• Ghana – 1731

• Nigeria – 32969

• South Africa – 31958

• Kenya – 5683

Elsewhere, the numbers are: 61418601934 and 45609910343.

Barack Obama, the first African-American president, has arrived in Ghana on his first visit to sub-Saharan Africa as US leader.

Ghana was chosen because of its democratic track record and Mr Obama is expected to use the trip to promote democracy across the continent.

He is due to visit a former slave fort as part of his 24-hour visit.

Posters of Barack and Michelle Obama dot the capital, Accra, where their arrival was eagerly awaited.

via BBC NEWS | Africa | Historic African trip for Obama.