THis is quick and dirty and just assumes that your data is structured the way you did in your post.

#!/usr/bin/perl

open IN, "in.txt"
    or die "Can't Open input\n";
    
$count = 0;
while (<IN>)
{
    chomp($_);
    if ($_ =~ /Users/)
    {
        print $_,"\t=\t";
    }
    elsif ($_ =~ /\.\.\./)
    {
        print $count,"\n";
        $count = 0;
    }
    else 
    {
        if ($_)
        {
            $count++;
        }
    }
}
[download]

gives this as a result from your example data

Users of some feature   =       3
Users of some other feature     =       3
Users of yet another feature    =       0
[download]

BigGuy
"One World, one Web, one Program" - Microsoft promotional ad
"Ein Volk, ein Reich, ein Fuhrer" - Adolf Hitler