This is a really common gaffe.

"There are less people reading this tutorial today than there were yesterday".

"There are fewer people reading this tutorial today than there were yesterday".

This is short and sweet: the word fewer is almost always used when the thing you're talking about can be counted. "I have fewer M&Ms than you" and "I have less porridge than you". M&M's can be counted, porridge can't.

However, Where collective units of measurement are being spoken of, we might have an exception! "I was doing less than 90 miles per hour", "This checkout is for baskets containing 10 items or less"

I watch a TV programme called Pointless every day. Sad, but true. The aim of the game is to score as few points as possible, a perversion of all the game show rules we know and love. The presenter's spiel goes something like "we gave 100 people 100 seconds to name as many XXXXs as they could. The person with the fewest points at the end of the round goes through to the head to head". So far, so good. At the end of the round, the presenter looks at the scoreboard and announces that "Nigel has scored less than Mavis, and therefore will go through etc. etc." Nigel has indeed scored less; he has fewer points. Get it?

By the way, you'll notice I used two "etc"s at the end of the sentence above. You only need one. "Etc." is a Latin expression that means "and other things", or "and so forth." So, why did I use two?

It's an Internet thing. Hopefully, when reading the sentence, you'll have heard my voice tailing off in a bored manner. It's a trick to get over the fact that you can't see or hear me. In the same way, you only ever need one exclamation mark at the end of a sentence, if ever. Often people will use more to highten the reader's understanding of the writers mood. LOL!!!!! Again, never do this in formal writing.

More tomorrow...