It’s quite easy to use. Add the widget to your sidebar in Appearance > Widgets, then press the “down arrow” beside “Iframeless”, and where it says URL, you enter the URL where you want content to be downloaded from.
An alternative to using an IFrame is to embed the content of the page you want to include in your worpress blog using the IFrame-less widget.
http://ww.wp.xz.cn/extend/plugins/iframe-less-plugin/
This can help SEO-wise, having the external content considered part of your blog, rather than you linking out to this content.
