It’s very hard, long and tiresome to sue (most of these webs are based in America). It’s also true that there isn’t much defence here aginst rip-offs. The authorities aren’t that bothered by one foreigner ripping off another and then there is the all-to-common ‘midnight flit’ which the Spanish rarely do. Then again – if you sue a 3000 euro SL company then there won’t be much in the kitty.
There are web-sites prepared to warn other people. In finance, there is the http://www.costa-action.co.uk/ which is now putting out a magazine.
I’ve got a few links that protect us at http://www.theentertaineronline.com/e107_plugins/links_page/links.php?cat.2