If I can find a particular site, are there any ways that I can quickly find other similar sites. Try Who Is Like It? (whoislike.it/). You simply type in a URL of a site that you like and it will try and find other similar sites for you.
Similicio.us (www.similicio.us/) and inSuggest (web.insuggest.com/) do the same job. Or you could use the Google 'related:' option: just type in a web address in the form of 'related:www.whatever.com' and it will try and pull up a couple of dozen alternatives for you.
Phil Bradley in CILIP Update (date not known)