Sorry about the downtime. Google informs me that my account was compromised and they locked the account to prevent further damage.
I am extremely paranoid on my end (anti-virus, encrypted drive, NoScript, separate Firefox Portable install, etc) so I can only assume that my account was captured because I used the same password on other sites.
I have lots of them: Rachel's Haven, Feeling Femme Sanctuary, Sissy School Forums, BigCloset TopShelf, ImageFap, Literotica, Hentai Foundry, Club Sissy, etc.
If any one of them were to have their password DB hacked I would be at risk. I have changed my main google/blogger account password and I recommend that you do as well if you use the same password on other sites.