One of the things Google and other searchengines are good at is searching on exact 
spelling. With this in mind it's interesting to note how the spelling of words and 
expressions is and will be more and more influenced by searchengines.  
For example: the expression net art (mind the space) will give you at the moment over
9.000.000 results through Google. This is because it will search for the words net and art. 
On the other hand if you type the word netart you will only get about 100.000 results. 
That's about 90 times less. From this it's clear that if you refer to net art it's strategically
best to use the word netart, especially when you keep in mind that the searcher 
will combine netart with another word to refine her/ his search.