  We briefly report the modern status of heavy quark sum rules (HQSR) based on
stability criteria by emphasizing the recent progresses for determining the QCD
parameters (alpha_s, m_{c,b} and gluon condensates)where their correlations
have been taken into account. The results: alpha_s(M_Z)=0.1181(16)(3),
m_c(m_c)=1286(16) MeV, m_b(m_b)=4202(7) MeV,<alpha_s G^2> = (6.49+-0.35)10^-2
GeV^4, < g^3 G^3 >= (8.2+-1.0) GeV^2 <alpha_s G^2> and the ones from recent
light quark sum rules are summarized in Table 2. One can notice that the SVZ
value of <alpha_s G^2> has been underestimated by a factor 1.6, <g^3 G^3> is
much bigger than the instanton model estimate, while the four-quark condensate
which mixes under renormalization is incompatible with the vacuum saturation
which is phenomenologically violated by a factor (2~4). The uses of HQSR for
molecules and tetraquarks states are commented.
