It is great publicity and the lottery funding clearly has made a big difference to most of the sports, but strangely not to athletics.
Strip out Mo who has his own team behind him and it's been well below par, with 2 relay bronzes at the end maybe just pulling them out of the sticky stuff.
http://powerof10.info/athletes/athleteslookup.aspx
When you look at the list of funded athletes, not many came up with the goods, in fact not many of them actually made it to the games.
Promising runs, such as Buchart and Hawkins, came from unfunded athletes.