Last year I did a number of blog tours and came to the conclusion, the only people who benefit are the people who pay for them. Although I gained a few blog reads, they were not for my blog posts but for the postings about the other people.
To demonstrate my point here are some examples:- Six weeks ago I was asked to do a blog interview for a a site I used to be on, since then the site has posted numerous other interviews but no sign of mine; I guess I am not flavour of the month since leaving. Twice last year I helped promote 5 Prince writers and of the eight I promoted, only three thanked me. I also took part in "The Next Big Thing," which meant you had to link up with five friends and pass the word around to help people.
Gain for me:- NOTHING
The bottom line here reads, I won't do any more. This year, I am doing more promoting for my books.