[einpoklum]

But they are making a year-on-year relative analysis, so even for a non-representative sample, you can identify a strong trend.

[iamryo]

The trend is still just searches. Do their historical search numbers closely represent actual figures for people coming and going?

[dllthomas]

Maybe it's a demographic shift between people who don't use their platform and those who do.

[hellisothers]

Or that people moving into the city/state are paying moving services while those leaving are DIY moving.