macros to generate better seeds
Although the link above purports to produce more random appearing seeds, I think this line of code does it much more simply:
random("seed", getTime()*10000);
Shifting the decimal seems to be key.
This IJ macro code is an example of the more randomly appearing seeding:
print("------");
for(x=0; x<20; x++) {
random("seed", getTime()*10000);
print(random);
}