Keyword research is the key to all article marketing campaigns, even
spun articles. Use the Google Keyword Tool (or your favorite keyword
tool) and look for a related keyword, that gets enough searches per
month, but whose competition is not that fierce. You can put the
keyword term into google with and see how many sites come up.
If there are over 100000 sites coming up, the competition may be too
fierce. Also, check the page rank of the top 5 sites on Google page 1.
If they are authority sites with PR of 4 and over, then rather target
another keyword term. It is best to target long tail (2-4 words)
keywords with less searches, where you can rank your article easily.
(Which keywords to target depends on how aggressively you are
planning to backlink to get to Google Page 1.)
If you are going to spin articles you would need to make it
spinnable using spin syntax . The more unique it is with the more
variations, the better. Nested spins always work better. If you are
spinning it yourself, I suggest you spin it after each paragraph to
check how readable the spun versions of the paragraph is. Try and
use at least 2-3 different sentence variations and then as many
word/phrase variations within that as possible, while keeping the
readability high.