I think it is because most locals seem to be well established ( with many reviews already), not many new SPs setting up shop it seems. The local MP selection while repetitively vast is rather lack-luster. I know i don't get out much and the providers I do see are usually already reviewed, so my adding 'same here' & 'yup what he said' doesn't contribute much. Now if somebody wants to commission me to visit providers and produce independent unbiased reviews...