Noting the fact that the accessibility of Twitter on mobile devices has led to a substantial gain in Twitter’s membership and traffic, the microblogging site’s chief executive Evan William said in a recent blog post that the site had had reached a new landmark of 145 million registered users.

Putting up an interesting post about Twitter mobile usage, the microblogging site’s chief executive Evan Williams disclosed on Tuesday that his service currently has 145 million registered accounts and nearly 300,000 apps using its open API.

According to the most recent statistics put forth by Pew Research, the use of social networks - like Facebook, Twitter and LikedIn – for users above the age of 50 years has increased two times over the last year or so.

In an attempt to make it easier for its users to share stories that catch their eye on the Internet, the popular microblogging site Twitter Thursday launched a new “tweet” button that websites can insert next to their content.

Making one’s followers on Twitter is like befriending the whole school and then abruptly turning the cell-phone off. This is one technique to increase one’s followers on the popularity contest of Twitter, and anyone can join the circle if the user really does not care about anything that is showing up on the homepage.

Yet another indication that the microblogging service Twitter is growing by leaps and bounds is the fact that the site has touched a new landmark – that of boasting its 20 billionth message! The new landmark for the 2006-launched service comes only about two months after Twitter’s 15-billionth tweet; and five months since the 10-billionth tweet!