I wondered that myself. The answer is that red ip addresses are lower quality downloads. Red means 3 stars in the far left column of the Limewire search window. Four stars are black ip addresses. I have my LW set for only 3 and 4 stars. But when I check the "search for all qualities", then it shows one star ips as black. So far, I have not seen any two stars. Solve one mystery and another shows up ! *smile

Jon