Search on blogger is worse than news.bbc.co.uk. Kind of ironic as google owns (and runs?) it.
i) It does not do partial matches, for example, my post entitled Mixing It Up does not get returned on a search for mix.
ii) Text searches do not match on labels, for example, the post mentioned above is labeled cycling but a search for cycling does not return that post.
iii) Text within the post not matched, eg, the above post contains the word "mixer" in the text, but is still not returned on a search for mixer.
iv) No search on Neil's Meandering Mind blog returns any results. At the moment the fist story is entitled Twitter Vs Facebook, a search for Twitter returns no results. Google hasn't indexed Neil's blog, maybe that's why..?
v) While editing your blog, if you click Edit Posts, and then do a free text search, the label links on the left do not work. You have to empty the search box and click search and then the label links will work again.
Formating seems to get lost if I use the Pencil logoed "Edit Post" link on a post rather than going blogger.com -> Edit Posts -> Edit post
UPDATE: I think this is because blogger.com takes me to draft.blogger.com while the post link takes me to www.blogger.com.
3) No WWW
For a while blogger.com did not work for me, I had to use www. This seems to have been fixed now. (See no-www and extra www.)
4) Comment spam detection does not work.
I don't get many comments on my blog, but roughly half of the comments that I do get are spam. As far as I can see no comment has ever automatically been marked as spam. As with search, google does spam detection so well for gmail, why can't they do it for blogger?