To merge multiple blogs in multiple account into one Blogger account, do the following. Since this post is motivated by someone who have multiple (I assume 3 or more) I will be writing this with the assumption that you do have 3 or more multiple accounts, but if you have only 2 accounts, I think it is no problem after reading the post how to adjust for that.
Update: Some bloggers who have successfully merged blogs in multiple accounts into one has also deleted their excess Google Account. Please note that images uploaded via the deleted Google account will no longer be displayed. Advice is to never delete any Google account even if you no longer have any use for it.
Before doing that, a piece of advice. If you are using only Internet Explorer, get FireFox, a much better browser than IE. Refer to
What is FireFox and why you should be using it. It is a big advantage to have more than one browser on your computer. Read about the advantages of this in
Why you should be using more than one browsers. All this will also make your following task easier. You may also want to add Opera. (You can do it with only one browser, but you will have to keep logging in and logging out).
In one browser, say, Internet Explorer, sign into your Blogger account which you want the blog transferred. Select the relevant blog. Click SETTINGS > MEMBERS. Click "Add Team Member(s). Then under New User(s), add the email of your other account in which you want to make your main Blogger account.
Open another browser, say FireFox, sign into your other Blogger account. Click on the blog. Click SETTINGS > MEMBERS. Click "Add Team Member(s)". Do the same thing as above.
Open one more browser, say Opera. Sign into the email with which you have registered with the main Blogger account. Check for the email invitations. Accept the invitations.
Go back to your previous browsers and get back into the Blogger account. Get into your MEMBERS setting. Make sure that your main account have been added as a team member. Give the the main account (yourself) administrative rights. Do the same for the other Blogger account in which you have added your main account as a team member. (In this case where I have assumed you have 3 accounts, it means going to the other browser).
Now that you have given the main Blogger account administrative rights, Go back to the browser in which you have signed into the email for the main account. Sign into your intended main Blogger account. Check your blogs, and make sure that the blogs have been added. Select the blogs, click SETTINGS > MEMBERS and make VERY SURE that you do have administrative rights. Then if you wish, you can remove the other team members (Blogger accounts). Now you have all your 3 blogs in one Blogger account.
Adjust the method according to the number of Blogger accounts and blogs that you have.
