Good question.
It sounds like in your case you'd use the bulk viewer because it more works for efficiently than singleton remote viewers. And it loads after the page is fully loaded so that it does not affect the page load times of the rest of the page.
Here is an example of the bulk viewer's usage:
<html>
<head>
<title>Test Remote Articles</title>
<script src="http://[your community's url here]/apis/scripts/remoteBulkViewer.ashx"></script>
<script type="text/javascript">
var tp_bulkViewer = new tp_remoteBulkViewer();
tp_bulkViewer.setProxy('/apis/test/remotemgr/proxy.aspx?url=%url%');
</script>
</head>
<body>
<form id="form1" runat="server">
<div style="margin-top:15px;margin-left:20px;">
<b>My Community Test Remote Comments</b>
Bulk viewer is being used to retrieve num comments. Bulk viewer is cached for 3 minutes.
<a href="remotearticle1.aspx" >Remote Article 1</a>
Num comments: <script type="text/javascript">tp_bulkViewer.add("itemnumcomments","id=1111");</script>
<a href="remotearticle2.aspx" >Remote Article 2</a>
Num comments: <script type="text/javascript">tp_bulkViewer.add("itemnumcomments","id=2222");</script>
</div>
</form>
</body>
</html>
Hope this helps
