the Elgg page
I assume you mean elgg.org?
additional features like followers & discussion added
Can you elaborate? There already is discussion available in the groups, and also you can follow other users by adding them as... view reply
This line hides it from non-authenticated users https://github.com/Elgg/Elgg/blob/2.2/mod/likes/start.php#L106 because only authenticated users are able to add annotations.
You need to make a plugin that registers plugin hook handler which... view reply
we would do our own version of Elgg ( fork from Elgg )
I have never had any reason to make a fork of Elgg (for the goal of making custom modifications to it). It is possible to do pretty much anything through plugins.
upload our version of... view reply
I haven't done extensive testing, but here are some statistics from a Elgg 1.x site from a couple of years ago. Based on these both CPU usage and amount of DB queries were reduced significantly when memcache was enabled.
I will... view reply