Chatting on Gmail is done through their IM. The name of IM of Google is Google Hangouts. It can be used for chatting to friends or groups.
People could hack your Gmail accounts. Gmail accounts could contain passwords, bank statements etc. Money could be hacked via these google accounts.
The total people using Gmail are 425 million. This is because the popularity of Google. Gmail being a Google product is trusted by people.
No, because you can only have the google buzz on google accounts, which is gmail. Aol, and Yahoo, don't have it....which is why you should always have a gmail account.
There is no direct link from Gmail to Google. You can insert in the URL bar to go to Google. Gmail itself is a product of Google.
You can send e-mails or invites or attachments from GMail to any other e-mail address, not just GMail ones. However, to use google chat on your gmail account, the other person has to have a gmail account of the same type. For example, say one person has a regular gmail account, and the other has a school gmail account. Those two people wouldn't be able to use google chat together. However, if both have regular gmails or both have the same school gmails, then they could use google chat together.
People are from Gmail the day it was formed. It was a popular product by Google industry. It was first released in the year 2004.
G in gmail stands for = Google
You can easily upload a video on Gmail. You can do that by attaching it on the Gmail site. The attachment could be done via Google Drive too.
Gmail is short term for google mail. It is email run by google. So technically it's email with less spam and junk.
Gmail and Google account are the same thing. The account created for Gmail can be used for Google. It is because Gmail itself is a a part of Google.
The Google App store is a part of Google products. You need a Gmail ID to access the store. The same Gmail ID for other products could be used here.