Jon...FYI Strelets contribution pages have all flock in one form of another.Just about all wargame magazines show flocked bases on figures also. Guess you are fairly new to the hobby or you would have tried it out by now.
To me flock helps make the difference between having models or just... toys.
Indian restaurant cant get enough ones here.Mexican cantinas and Ranch steakhouses sure gets pretty boring.
Static grass is "true flock", you just get so mnay other products like- dyed sawdust, chips, fibres etc pretending to be flock, its become a general term now- like Hoover the brand is generally used to describe any kind of vacuum cleaner.