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Finding IT online, though, is a different proposition. Just go to Google,
type in “economist” and you will be instantly directed to economist.com. Though IT is difficult to remember now, THIS was not always the case. Indeed, until Google, now the world's most popular search engine, came on to the scene in September 1998, IT was not the case at all. As in the physical world, searching online was a hit-or-miss affair.
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Can somebody help me?
Exercise:
The beginning of the text contains various words, which are writed in capital letters. What do they refer to?
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Welcome to English Forums. And how can we help you?

Ah, I see-- your question is below the line.

IT =Information Technology
THIS = a stressed form of 'this'
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Mr M: Difficult indeed to discern the question. But I feel certain "it" is a matter of the pronoun "it" and what "it" refers to (i.e., what the antecedent of "it" is in various places in the passage), and nothing to do with Info Tech. Emotion: smile

Finding 1. IT online, though, is a different proposition. Just go to Google, type in “economist” and you will be instantly directed to economist.com. Though 2. IT is difficult to remember now, 3. THIS was not always the case. Indeed, until Google, now the world's most popular search engine, came on to the scene in September 1998, 4. IT was not the case at all. As in the physical world, searching online was a hit-or-miss affair.

References are to:
1. the thing to be found, presumably "economist.com"
2. dummy "it" for "to remember now", i.e., to remember now how difficult the task used to be
3. the ease of searching online
4. the ease of searching online

CJ
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Comments  
capital IT is not the Information Technology, with IT I mean the pronoun, and THIS ist the demonstrative.
There are 3 reference words, IT, THIS and IT. I only want to know, to what they refer to.

I hope you can help me, thanks.
 CalifJim's reply was promoted to an answer.
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Thanks a lot for your answer.
Sorry, Mantilla. My first post in the morning often suffers. A good case for having multiple Moderators.