Why would bloggers tag posts with keywords

So that is much easier for other people to understand the answer and easier to answer.

the sun warms our planet, and with the moon, creates the tides. the moon orbits the earth and in turn, the earth orbits the sun. because they appear to be the same size in the sky, the sun, earth and moon work together to create eclipses. when the moon is directly in between the earth and sun

government played the key role in promoting industrialization in russia while individual businesses played a larger role in great britain. or for apex a