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We use light-cone QCD sum rules to evaluate the strong coupling $g_{f_0 K^+K^-}$ which enters in several analyses concerning the scalar $f_0(980)$ meson.The result: $6.2\le g_{f_0 K^+ K^-}\le 7.8$ GeV is larger than in previousdeterminations.Comment: Talk given at the International Europhysics Conference on High Energy  Physics - EPS 2003, July 17-23, Aachen, Germany. LaTex, 3 pages, 1 eps figur

On the coupling $\ensuremath g_{f_0K^+K^-}$ and the structure of f0(980)