I've had emails asking about use of Wikis, which this post largely relies on.
Basically - its okay to use Wikis as the primary resource for SOME posts, but if your blog continually relies on this you are showing weak research skills. Do general googling, try Amazon book searches (and use the 'Look Inside' to access some sample pages) in conjunction with google books (again, you can read some sample pages), newspaper searches (eg Guardian), magazines, blogs etc You could also do a quick index search of Lib/F6 books.
If you want to make it clear not just to me but to the exam board how wide your research has been, start a Links List called Sources Used For Research. Put a link and description in for every source you use (so Amazon links for books). This would overlap with more specific Links Lists but:
make it easy for credit to be awarded for your work; make the evidence very easy to spot.
When I'm justifying my marks to the exam board I have to write detailed summaries; use what you learned from marking 2011 blogs to put the evidence of your work (not just research but ticking every box - aud research/feedback, drafting etc) in a prominent space.
Imagine you're an examiner with 300 blogs to mark - which is the approx number many will be assigned. Now imagine marking two blogs: one has used links lists/summary posts to summarise work, learning and blog content, handily fitting in with the assessment criteria. This blog can be skimmed through and marks verified quickly. But a second blog hasn't done this; an hour later, after you've trawled through just some of the posts looking for evidence of excellence/proficiency etc on each criteria you think its a borderline case, but thankfully you're feeling so happy at having to spend all this time that naturally you'll award the most positive mark...