It would help us if your question was a bit more specific. Alternative perspectives of what you are asking possibly include:

• What search engine does one prefer?
• What sources (of data) does one use most frequently?
• What statistical/econometrics package does one favor?
• What kinds collaboration facilitate research? (This is a bit of a stretch.)

Please attempt to narrow your question to one of these, or something better, and I suspect more answers will be forthcoming.

@ Rob, In fact it is what search engine do you prefer? Thank you.

Is the internet search engine meant ?

@ Hassan, Yes.

Najib,

Thank you for editing your question; it is clear now.

Rob

The best use of Google search engine, for several reasons, the most important: it helps greatly in obtaining research through Google Scholar, it is often fast, contains a huge amount of data and the possibilities of linking it to email or sharing and others are very high....