As title says, is there any issue?
for example, i use them this way:
$("abbr.timeago").livequery(function() {
$(this).timeago();
});
$("#btnPhoto").livequery(function() {
createUploader();
});
$("#inputTagline").livequery(function () {
$(this).charCount();
});;
EDIT

My web page alone uses up 100k memory.
Provided page contents are generated by ajax, does anyone of you know how to solve the .timeago() problem? I really appreciate that. Thanks
UPDATE
Now i can get rid of livequery by @Linas answe below. Any better answers are welcome!
I am working on similar project as yours, and i also use time ago plugin, so i was facing same issue as you do right now.
What i did is i made a helper function, which does various stuff like updates time, removes unused content and so on. So instead of using livequery i simply call that helper function when i update any content on my page and so saving a lot of memory.
EDIT
It’s just a very simple function that you create for your self:
And every time you use some kind of function which updates your content via ajax after it just call
helper()and it will take care of things that you need, no need to worry about plugins, and their performance since you have full control over your script.