how to measure amount of online people at this moment?
Re: how to measure amount of online people at this moment?
There are a couple of tools that might help you.
If you're planning a search campaign, you could use Keyword Planner tool which will give you approximate forecasts of impressions, cost, etc. for selected keywords. It will also help you generate new ideas for keywords.
On the other hand, if you're about to launch a Display campaign, then Display Planner is the way to go: you enter your campaign's country, language, other ways to target your campaigns and - voila - you get the estimates for a Google Display Network campaign, too!
Will these toold show you a number of people online at this moment in your region? No, but you'll have some good data regarding your target audience.
Hope this helps!