Well BHW friends I do not know whether any one using this technique or not. But certainly below describe technique is a very good way to get backlinks and also from a high authority website. Here we are discussing about wikispaces.com As may be everyone knows wikispaces articles have huge value. google gives important to wikispaces articles. So why should not we take benefit of that? ????? ha ha ha ??? are you thinking that , i am saying here to post your article in wikispaces???? So my answer is NO. So what the hell i am talking about?? As you know in wikispaces articles can be protected and can be edit. There is a option for that in wikispaces. But a lot of people do not use protect option for their articles, so basically they leave all articles in editable format. So just search Code: site: wikispaces.com (your keyword) in google. So you will get a lot of articles related to your keywords. Go to each article and look that whether that is protected or in edited condition. If it is in edited condition [90% articles are usually in edited condition], then click on edit button and put your backlink with keyword. Thats it , you will get high pr backlinks with a small effort. Keep enjoying backlinks. You will not face any legal problem for this, because wikispaces articles are free to edit.